Windows
Analysis Report
lem.exe
Overview
General Information
Detection
Vidar
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Attempt to bypass Chrome Application-Bound Encryption
Found malware configuration
Suricata IDS alerts for network traffic
Yara detected Vidar stealer
C2 URLs / IPs found in malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Monitors registry run keys for changes
Searches for specific processes (likely to inject)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
AV process strings found (often used to terminate AV products)
Binary contains a suspicious time stamp
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to create guard pages, often used to hinder reverse engineering and debugging
Contains functionality to modify clipboard data
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to record screenshots
Contains functionality to retrieve information about pressed keystrokes
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Drops PE files
Drops PE files to the application program directory (C:\ProgramData)
Drops files with a non-matching file extension (content does not match file extension)
Extensive use of GetProcAddress (often used to hide API calls)
Found dropped PE file which has not been started or loaded
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE / OLE file has an invalid certificate
PE file contains executable resources (Code or Archives)
PE file does not import any functions
Potential key logger detected (key state polling based)
Queries information about the installed CPU (vendor, model number etc)
Queries keyboard layouts
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Sigma detected: Browser Started with Remote Debugging
Sigma detected: Suspicious Execution From GUID Like Folder Names
Stores files to the Windows start menu directory
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Uses insecure TLS / SSL version for HTTPS connection
Yara detected Credential Stealer
Classification
- System is w10x64
lem.exe (PID: 3128 cmdline:
"C:\Users\ user\Deskt op\lem.exe " MD5: 0C38E5CACC997DB36AEB4678C1DDF3BC) lem.tmp (PID: 3200 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\is-KSU J1.tmp\lem .tmp" /SL5 ="$20438,1 5291586,11 9296,C:\Us ers\user\D esktop\lem .exe" MD5: B1F9D665E52C29972B50D7145D88DCE1) lem.exe (PID: 6564 cmdline:
"C:\Users\ user\Deskt op\lem.exe " /VERYSIL ENT MD5: 0C38E5CACC997DB36AEB4678C1DDF3BC) lem.tmp (PID: 2412 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\is-TVM NB.tmp\lem .tmp" /SL5 ="$2043C,1 5291586,11 9296,C:\Us ers\user\D esktop\lem .exe" /VER YSILENT MD5: B1F9D665E52C29972B50D7145D88DCE1) Start10ThemeEdit.exe (PID: 6488 cmdline:
"C:\Users\ user\AppDa ta\Roaming \{2836644D -224C-4C95 -892D-5D57 DDC11073}\ Start10The meEdit.exe " allodial .a3x MD5: 130B120FF6433E3819F0C23701F68C22) chrome.exe (PID: 3376 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --re mote-debug ging-port= 9223 --pro file-direc tory="Defa ult" MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) chrome.exe (PID: 5424 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --ty pe=utility --utility -sub-type= network.mo jom.Networ kService - -lang=en-U S --servic e-sandbox- type=none --mojo-pla tform-chan nel-handle =2320 --fi eld-trial- handle=229 6,i,235770 9193393585 783,531937 3737350838 943,262144 /prefetch :8 MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) msedge.exe (PID: 7596 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --remot e-debuggin g-port=922 3 --profil e-director y="Default " MD5: 69222B8101B0601CC6663F8381E7E00F) msedge.exe (PID: 7832 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --type= utility -- utility-su b-type=net work.mojom .NetworkSe rvice --la ng=en-GB - -service-s andbox-typ e=none --m ojo-platfo rm-channel -handle=25 52 --field -trial-han dle=2348,i ,106615385 9910860921 5,11966019 1529360873 5,262144 / prefetch:3 MD5: 69222B8101B0601CC6663F8381E7E00F) cmd.exe (PID: 1580 cmdline:
"C:\Window s\system32 \cmd.exe" /c timeout /t 10 & d el /f /q " C:\Users\u ser\AppDat a\Roaming\ {2836644D- 224C-4C95- 892D-5D57D DC11073}\S tart10Them eEdit.exe" & rd /s / q "C:\Prog ramData\hv aa1" & exi t MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 5352 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) timeout.exe (PID: 3360 cmdline:
timeout /t 10 MD5: 976566BEEFCCA4A159ECBDB2D4B1A3E3)
msedge.exe (PID: 7896 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --remot e-debuggin g-port=922 3 --profil e-director y=Default --flag-swi tches-begi n --flag-s witches-en d --disabl e-nacl --d o-not-de-e levate MD5: 69222B8101B0601CC6663F8381E7E00F) msedge.exe (PID: 8168 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --type= utility -- utility-su b-type=net work.mojom .NetworkSe rvice --la ng=en-GB - -service-s andbox-typ e=none --m ojo-platfo rm-channel -handle=22 20 --field -trial-han dle=1964,i ,771650263 1515619870 ,943062331 2018008994 ,262144 /p refetch:3 MD5: 69222B8101B0601CC6663F8381E7E00F) msedge.exe (PID: 6820 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --type= utility -- utility-su b-type=ass et_store.m ojom.Asset StoreServi ce --lang= en-GB --se rvice-sand box-type=a sset_store _service - -mojo-plat form-chann el-handle= 6732 --fie ld-trial-h andle=1964 ,i,7716502 6315156198 70,9430623 3120180089 94,262144 /prefetch: 8 MD5: 69222B8101B0601CC6663F8381E7E00F) msedge.exe (PID: 4128 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --type= utility -- utility-su b-type=ent ity_extrac tion_servi ce.mojom.E xtractor - -lang=en-G B --servic e-sandbox- type=entit y_extracti on --onnx- enabled-fo r-ee --moj o-platform -channel-h andle=5888 --field-t rial-handl e=1964,i,7 7165026315 15619870,9 4306233120 18008994,2 62144 /pre fetch:8 MD5: 69222B8101B0601CC6663F8381E7E00F) msedge.exe (PID: 3884 cmdline:
"C:\Progra m Files (x 86)\Micros oft\Edge\A pplication \msedge.ex e" --type= utility -- utility-su b-type=edg e_search_i ndexer.moj om.SearchI ndexerInte rfaceBroke r --lang=e n-GB --ser vice-sandb ox-type=se arch_index er --messa ge-loop-ty pe-ui --mo jo-platfor m-channel- handle=700 4 --field- trial-hand le=1964,i, 7716502631 515619870, 9430623312 018008994, 262144 /pr efetch:8 MD5: 69222B8101B0601CC6663F8381E7E00F)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Vidar | Vidar is a forked malware based on Arkei. It seems this stealer is one of the first that is grabbing information on 2FA Software and Tor Browser. | No Attribution |
{"C2 url": "https://steamcommunity.com/profiles/76561199828130190", "Botnet": "ot0yikam"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Vidar_1 | Yara detected Vidar stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Vidar_1 | Yara detected Vidar stealer | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_Vidar_1 | Yara detected Vidar stealer | Joe Security | ||
JoeSecurity_Vidar_1 | Yara detected Vidar stealer | Joe Security | ||
JoeSecurity_Vidar_1 | Yara detected Vidar stealer | Joe Security | ||
Click to see the 3 entries |
Source: | Author: pH-T (Nextron Systems), Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: Nasreddine Bencherchali (Nextron Systems): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T21:02:52.458400+0100 | 2044247 | 1 | Malware Command and Control Activity Detected | 116.202.180.73 | 443 | 192.168.2.5 | 49863 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T21:02:53.939224+0100 | 2051831 | 1 | Malware Command and Control Activity Detected | 116.202.180.73 | 443 | 192.168.2.5 | 49871 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T21:02:51.120843+0100 | 2049087 | 1 | A Network Trojan was detected | 192.168.2.5 | 49853 | 116.202.180.73 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T21:02:55.581314+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49883 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:02:56.613056+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49892 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:04.860712+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49964 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:05.363925+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49977 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:06.442827+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49985 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:07.495386+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49994 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:09.228435+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50000 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:15.463256+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50051 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:16.089403+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50058 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:17.036102+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50067 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:19.027498+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50095 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:20.223344+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50107 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:21.246353+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50117 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:23.332901+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50122 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:28.308149+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50131 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:30.816299+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50135 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:41.653514+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50140 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:42.584836+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50141 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:43.583247+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50142 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:44.582198+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50143 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:45.509132+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50144 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:46.650727+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50145 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:47.953573+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50146 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:48.858287+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50147 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:49.758524+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50148 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:50.722297+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50149 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:51.785047+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50150 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:52.956927+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50151 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:53.899085+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50152 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:54.914314+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50153 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:56.108876+0100 | 2059331 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50154 | 116.202.180.73 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T21:03:05.363925+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49977 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:06.442827+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49985 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:07.495386+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49994 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:16.089403+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50058 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:17.036102+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50067 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:19.027498+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50095 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:20.223344+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50107 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:21.246353+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50117 | 116.202.180.73 | 443 | TCP |
2025-02-19T21:03:23.332901+0100 | 2859636 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 50122 | 116.202.180.73 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T21:02:49.779972+0100 | 2859378 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49842 | 116.202.180.73 | 443 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: |
Source: | Malware Configuration Extractor: |
Source: | Code function: | 6_3_02A15FE7 | |
Source: | Code function: | 6_3_02A1E7E9 |
Source: | Static PE information: |
Source: | HTTPS traffic detected: |
Source: | HTTPS traffic detected: | ||
Source: | HTTPS traffic detected: |
Source: | Static PE information: |
Source: | Binary string: |