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Windows Analysis Report
CV.bat.exe

Overview

General Information

Sample Name:CV.bat.exe
Analysis ID:715070
MD5:40372d67f0de4526f04fba7948f7ff02
SHA1:f1c8f97bd587125f6c48fb5e80bd191bff253a97
SHA256:8bdbc254d871d5f2ffbdc50ea20070910cfa9c1be2b114ae1077ebc7b6d245d2
Tags:exeFormbook
Infos:

Detection

FormBook
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
Yara detected AntiVM3
System process connects to network (likely due to code injection or exploit)
Sigma detected: Scheduled temp file as task from temp location
Multi AV Scanner detection for dropped file
Sample uses process hollowing technique
Tries to steal Mail credentials (via file / registry access)
Maps a DLL or memory area into another process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Queues an APC in another process (thread injection)
Deletes itself after installation
Machine Learning detection for dropped file
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Adds a directory exclusion to Windows Defender
Uses schtasks.exe or at.exe to add and modify task schedules
Tries to harvest and steal browser information (history, passwords, etc)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Contains long sleeps (>= 3 min)
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
Drops PE files
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)

Classification

  • System is w10x64
  • CV.bat.exe (PID: 6056 cmdline: C:\Users\user\Desktop\CV.bat.exe MD5: 40372D67F0DE4526F04FBA7948F7FF02)
    • powershell.exe (PID: 5156 cmdline: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\user\AppData\Roaming\PzKpucfDtCCmww.exe MD5: DBA3E6449E97D4E3DF64527EF7012A10)
      • conhost.exe (PID: 5152 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • schtasks.exe (PID: 5148 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PzKpucfDtCCmww" /XML "C:\Users\user\AppData\Local\Temp\tmpE00F.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 5908 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • CV.bat.exe (PID: 5060 cmdline: C:\Users\user\Desktop\CV.bat.exe MD5: 40372D67F0DE4526F04FBA7948F7FF02)
      • explorer.exe (PID: 3452 cmdline: C:\Windows\Explorer.EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D)
        • chkdsk.exe (PID: 1264 cmdline: C:\Windows\SysWOW64\chkdsk.exe MD5: 2D5A2497CB57C374B3AE3080FF9186FB)
  • cleanup
{"C2 list": ["www.miarizzuto.org/redb/"], "decoy": ["p38MheawG5TlW4TfEW6HgnBkENlaHA==", "F+wu9lADd7UfKolzCb9JriAY5iBtDQ==", "PMgcpd10tc8LZXzLxv4=", "4aYRlQCb7ZZngur8q5Rm3kIG7S0=", "gae+T40jXAwQNntTjeU=", "nDNoH34RcgfW/T4Ywoj4GxdCtw==", "FubuYrVZyeowZKOpSkjwGxdCtw==", "NsZyQ5lBhfS7M1Yx4Q==", "ShBaHnokZaIGGCu+v/w=", "lWJW3gysIs6U7DGWty1OHzCrue9z", "qsjESV5CtJxV0SgCbsJewg==", "P+EX8vkyJWffLEtt97JEwA==", "z/cJhdNs94kvQZJi2VN6Q+7grOZx", "AdeUdb1hY9RKdOmFObn0", "4IR+FFv7MeHN6Cf+bsJewg==", "1qYHwBCj8omX9xww4w==", "EqleInYijmBzntqzWkNfsmA=", "wdDzwzcDOKBinhcAbsJewg==", "krhiJnYVgPe19Ug47cFafWXBYNNeHA==", "XvZT4SS4I5z7I4KPKwE1rUXn", "3+jWW9Cjn6CDtRam33vCu29XvQ==", "fixwUsqR/Bhvoxelu8p62kIG7S0=", "+xZKR0ZmPHiNmA==", "s+wCc7RamYK1zRtqV4tu20IG7S0=", "Adpp4DwAZvKTqQTutY78GxdCtw==", "ENoh3DrcN71TZZ7yuDwz7hb4", "hVdX90DrOpYeTLlSjDqBHsUhvw==", "JLDfpyXXPZoFE3hUyUMtOjPw", "vcxK310Uizkei4li+g==", "jVoz8Wo8fftcy0Y19A==", "/9NY2EQWgeFpnOE4PpKhiEIG7S0=", "VWWBP5ApimC5WSu+v/w=", "/4jic9h447GVpPjaiJJDt1OWV9Tjrj8=", "Q3IXW01pPHiNmA==", "zu5p800BTjnc+HBX", "sHpILIYjPHiNmA==", "kzZ3NXccc1VJU6b8CQlYPzCgLCU=", "JkDjrfap8OwGNo5l7b9NWnBWAjF/FA==", "eZ7YtfuZDNykFpLz6w==", "+xCzdKQ4l9xjnPSCps41rUXn", "AMBRFYdNtwxsbtm0MnMRgmA=", "0PqdgNaF09X4IpumBiOU2w==", "LDOgG3QmrIdnh8xlQdT+", "WHr+gr5vzOwXZXzLxv4=", "1HCmeNBTwkgPOjMZues=", "Ey2VG0fZDBIARaZZ", "omKAbliAi+N88WFM", "o8Istv946qZPd/DSVxaBI4qcKDo=", "yJ7urxrQGzh79xww4w==", "gSagOLSM94AnZcIgNHEE7BT4", "Qw4NhuR+4wY8YNlKd/QdAD0o6KjhuZtdtA==", "fpkQmAa5Mc1bbcRlQdT+", "WCBsPKxZzVzxCUvUCwdC1Hc=", "jjsM3i7VLQYqPqEIITscq1fmBgp5Aw==", "RdisRWOCpYiFmQ==", "Hry/mxIQHqRu", "7fuXY96T/ZEkivUHv5X2", "xtp9W9eNjxd/5Oc6RFa1YB5DtQ==", "pMfOU5EWV01pdcMiPlQNWrZT/zQ=", "jUmgKGL5a/tcy0Y19A==", "pkrCW5s1rBqi3FXkFa4A3QGrue9z", "uYslkvGb8iFcy0Y19A==", "S9y7PZ5kwHP1PZLg2vCU3Q==", "DalTG28tlbdvpPQ="]}
SourceRuleDescriptionAuthorStrings
00000011.00000002.528027356.0000000005380000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_FormBookYara detected FormBookJoe Security
    00000011.00000002.528027356.0000000005380000.00000004.00000800.00020000.00000000.sdmpWindows_Trojan_Formbook_1112e116unknownunknown
    • 0x6601:$a1: 3C 30 50 4F 53 54 74 09 40
    • 0x1f230:$a2: 74 0A 4E 0F B6 08 8D 44 08 01 75 F6 8D 70 01 0F B6 00 8D 55
    • 0xa97f:$a3: 1A D2 80 E2 AF 80 C2 7E EB 2A 80 FA 2F 75 11 8A D0 80 E2 01
    • 0x17eb7:$a4: 04 83 C4 0C 83 06 07 5B 5F 5E 8B E5 5D C3 8B 17 03 55 0C 6A 01 83
    00000011.00000002.528027356.0000000005380000.00000004.00000800.00020000.00000000.sdmpFormbook_1autogenerated rule brought to you by yara-signatorFelix Bilstein - yara-signator at cocacoding dot com
    • 0x17cb5:$sequence_1: 3C 24 0F 84 76 FF FF FF 3C 25 74 94
    • 0x17761:$sequence_2: 3B 4F 14 73 95 85 C9 74 91
    • 0x17db7:$sequence_3: 3C 69 75 44 8B 7D 18 8B 0F
    • 0x17f2f:$sequence_4: 5D C3 8D 50 7C 80 FA 07
    • 0xa54a:$sequence_5: 0F BE 5C 0E 01 0F B6 54 0E 02 83 E3 0F C1 EA 06
    • 0x169ac:$sequence_6: 57 89 45 FC 89 45 F4 89 45 F8
    • 0x1de87:$sequence_8: 3C 54 74 04 3C 74 75 F4
    • 0x1ef9a:$sequence_9: 56 68 03 01 00 00 8D 85 95 FE FF FF 6A 00
    00000011.00000002.528027356.0000000005380000.00000004.00000800.00020000.00000000.sdmpFormbookdetect Formbook in memoryJPCERT/CC Incident Response Group
    • 0x1a179:$sqlite3step: 68 34 1C 7B E1
    • 0x1acf1:$sqlite3step: 68 34 1C 7B E1
    • 0x1a1bb:$sqlite3text: 68 38 2A 90 C5
    • 0x1ad36:$sqlite3text: 68 38 2A 90 C5
    • 0x1a1d2:$sqlite3blob: 68 53 D8 7F 8C
    • 0x1ad4c:$sqlite3blob: 68 53 D8 7F 8C
    00000008.00000002.418181649.0000000000DE0000.00000040.10000000.00040000.00000000.sdmpWindows_Trojan_Formbook_1112e116unknownunknown
    • 0x6601:$a1: 3C 30 50 4F 53 54 74 09 40
    • 0xa97f:$a3: 1A D2 80 E2 AF 80 C2 7E EB 2A 80 FA 2F 75 11 8A D0 80 E2 01
    Click to see the 20 entries

    Persistence and Installation Behavior

    barindex
    Source: Process startedAuthor: Joe Security: Data: Command: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PzKpucfDtCCmww" /XML "C:\Users\user\AppData\Local\Temp\tmpE00F.tmp, CommandLine: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PzKpucfDtCCmww" /XML "C:\Users\user\AppData\Local\Temp\tmpE00F.tmp, CommandLine|base64offset|contains: *j, Image: C:\Windows\SysWOW64\schtasks.exe, NewProcessName: C:\Windows\SysWOW64\schtasks.exe, OriginalFileName: C:\Windows\SysWOW64\schtasks.exe, ParentCommandLine: C:\Users\user\Desktop\CV.bat.exe, ParentImage: C:\Users\user\Desktop\CV.bat.exe, ParentProcessId: 6056, ParentProcessName: CV.bat.exe, ProcessCommandLine: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PzKpucfDtCCmww" /XML "C:\Users\user\AppData\Local\Temp\tmpE00F.tmp, ProcessId: 5148, ProcessName: schtasks.exe
    No Snort rule has matched

    Click to jump to signature section

    Show All Signature Results

    AV Detection

    barindex
    Source: CV.bat.exeReversingLabs: Detection: 33%
    Source: CV.bat.exeVirustotal: Detection: 34%Perma Link
    Source: Yara matchFile source: 00000011.00000002.528027356.0000000005380000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
    Source: Yara matchFile source: 0000000D.00000000.380716158.00000000109CA000.00000040.00000001.00040000.00000000.sdmp, type: MEMORY
    Source: Yara matchFile source: 00000011.00000002.527385470.0000000005350000.00000040.10000000.00040000.00000000.sdmp, type: MEMORY
    Source: Yara matchFile source: 00000008.00000002.417314875.0000000000401000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY
    Source: Yara matchFile source: 00000011.00000002.522661279.0000000000D90000.00000040.80000000.00040000.00000000.sdmp, type: MEMORY
    Source: C:\Users\user\AppData\Roaming\PzKpucfDtCCmww.exeReversingLabs: Detection: 33%
    Source: CV.bat.exeJoe Sandbox ML: detected
    Source: C:\Users\user\AppData\Roaming\PzKpucfDtCCmww.exeJoe Sandbox ML: detected
    Source: 00000011.00000002.528027356.0000000005380000.00000004.00000800.00020000.00000000.sdmpMalware Configuration Extractor: FormBook {"C2 list": ["www.miarizzuto.org/redb/"], "decoy": ["p38MheawG5TlW4TfEW6HgnBkENlaHA==", "F+wu9lADd7UfKolzCb9JriAY5iBtDQ==", "PMgcpd10tc8LZXzLxv4=", "4aYRlQCb7ZZngur8q5Rm3kIG7S0=", "gae+T40jXAwQNntTjeU=", "nDNoH34RcgfW/T4Ywoj4GxdCtw==", "FubuYrVZyeowZKOpSkjwGxdCtw==", "NsZyQ5lBhfS7M1Yx4Q==", "ShBaHnokZaIGGCu+v/w=", "lWJW3gysIs6U7DGWty1OHzCrue9z", "qsjESV5CtJxV0SgCbsJewg==", "P+EX8vkyJWffLEtt97JEwA==", "z/cJhdNs94kvQZJi2VN6Q+7grOZx", "AdeUdb1hY9RKdOmFObn0", "4IR+FFv7MeHN6Cf+bsJewg==", "1qYHwBCj8omX9xww4w==", "EqleInYijmBzntqzWkNfsmA=", "wdDzwzcDOKBinhcAbsJewg==", "krhiJnYVgPe19Ug47cFafWXBYNNeHA==", "XvZT4SS4I5z7I4KPKwE1rUXn", "3+jWW9Cjn6CDtRam33vCu29XvQ==", "fixwUsqR/Bhvoxelu8p62kIG7S0=", "+xZKR0ZmPHiNmA==", "s+wCc7RamYK1zRtqV4tu20IG7S0=", "Adpp4DwAZvKTqQTutY78GxdCtw==", "ENoh3DrcN71TZZ7yuDwz7hb4", "hVdX90DrOpYeTLlSjDqBHsUhvw==", "JLDfpyXXPZoFE3hUyUMtOjPw", "vcxK310Uizkei4li+g==", "jVoz8Wo8fftcy0Y19A==", "/9NY2EQWgeFpnOE4PpKhiEIG7S0=", "VWWBP5ApimC5WSu+v/w=", "/4jic9h447GVpPjaiJJDt1OWV9Tjrj8=", "Q3IXW01pPHiNmA==", "zu5p800BTjnc+HBX", "sHpILIYjPHiNmA==", "kzZ3NXccc1VJU6b8CQlYPzCgLCU=", "JkDjrfap8OwGNo5l7b9NWnBWAjF/FA==", "eZ7YtfuZDNykFpLz6w==", "+xCzdKQ4l9xjnPSCps41rUXn", "AMBRFYdNtwxsbtm0MnMRgmA=", "0PqdgNaF09X4IpumBiOU2w==", "LDOgG3QmrIdnh8xlQdT+", "WHr+gr5vzOwXZXzLxv4=", "1HCmeNBTwkgPOjMZues=", "Ey2VG0fZDBIARaZZ", "omKAbliAi+N88WFM", "o8Istv946qZPd/DSVxaBI4qcKDo=", "yJ7urxrQGzh79xww4w==", "gSagOLSM94AnZcIgNHEE7BT4", "Qw4NhuR+4wY8YNlKd/QdAD0o6KjhuZtdtA==", "fpkQmAa5Mc1bbcRlQdT+", "WCBsPKxZzVzxCUvUCwdC1Hc=", "jjsM3i7VLQYqPqEIITscq1fmBgp5Aw==", "RdisRWOCpYiFmQ==", "Hry/mxIQHqRu", "7fuXY96T/ZEkivUHv5X2", "xtp9W9eNjxd/5Oc6RFa1YB5DtQ==", "pMfOU5EWV01pdcMiPlQNWrZT/zQ=", "jUmgKGL5a/tcy0Y19A==", "pkrCW5s1rBqi3FXkFa4A3QGrue9z", "uYslkvGb8iFcy0Y19A==", "S9y7PZ5kwHP1PZLg2vCU3Q==", "DalTG28tlbdvpPQ="]}
    Source: CV.bat.exeStatic PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE
    Source: CV.bat.exeStatic PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
    Source: Binary string: wntdll.pdbUGP source: CV.bat.exe, 00000008.00000003.301579831.0000000001080000.00000004.00000800.00020000.00000000.sdmp, CV.bat.exe, 00000008.00000003.297213118.0000000000EF0000.00000004.00000800.00020000.00000000.sdmp, CV.bat.exe, 00000008.00000002.418379413.0000000001220000.00000040.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000003.417519841.00000000054B4000.00000004.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000002.531741340.0000000005800000.00000040.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000003.421300076.000000000566D000.00000004.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000002.533143376.000000000591F000.00000040.00000800.00020000.00000000.sdmp
    Source: Binary string: wntdll.pdb source: CV.bat.exe, CV.bat.exe, 00000008.00000003.301579831.0000000001080000.00000004.00000800.00020000.00000000.sdmp, CV.bat.exe, 00000008.00000003.297213118.0000000000EF0000.00000004.00000800.00020000.00000000.sdmp, CV.bat.exe, 00000008.00000002.418379413.0000000001220000.00000040.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000003.417519841.00000000054B4000.00000004.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000002.531741340.0000000005800000.00000040.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000003.421300076.000000000566D000.00000004.00000800.00020000.00000000.sdmp, chkdsk.exe, 00000011.00000002.533143376.000000000591F000.00000040.00000800.00020000.00000000.sdmp

    Networking

    barindex
    Source: C:\Windows\explorer.exeDomain query: www.hipnoterapia.store
    Source: C:\Windows\explorer.exeNetwork Connect: 91.195.240.94 80Jump to behavior
    Source: C:\Windows\explorer.exeNetwork Connect: 63.141.242.46 80Jump to behavior
    Source: C:\Windows\explorer.exeDomain query: www.yaignars.site
    Source: C:\Windows\explorer.exeDomain query: www.miarizzuto.org
    Source: Malware configuration extractorURLs: www.miarizzuto.org/redb/
    Source: Joe Sandbox ViewASN Name: SEDO-ASDE SEDO-ASDE
    Source: global trafficHTTP traffic detected: GET /redb/?SrNH_=ZbLl4nlXWVx&W