Analysis
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max time kernel
111s -
max time network
125s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
05-12-2021 00:16
Static task
static1
Behavioral task
behavioral1
Sample
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe
Resource
win10-en-20211014
General
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Target
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe
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Size
820KB
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MD5
4fb4323c4ae2d9b629a26e4a7e8247d7
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SHA1
f79e72a96c5a32dd6763da1df5840c387b5c97c9
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SHA256
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca
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SHA512
60149c7f02dac754a64d582efa9cc85ee1bf7552b432801bb33b05a6f3d3bac22487bca5dd6cd66a72586b7c226ad6dcd10c4a3714f9489590680631299de3fc
Malware Config
Extracted
djvu
http://tzgl.org/lancer/get.php
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extension
.hgsh
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offline_id
gYuqQ5GsAaJom08TivUVhlPzZDKd916x4NcXrWt1
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payload_url
http://kotob.top/dl/build2.exe
http://tzgl.org/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1876-119-0x0000000002400000-0x000000000251B000-memory.dmp family_djvu behavioral1/memory/8-120-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/8-121-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/8-122-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/552-128-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/552-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
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Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\efba6a00-32f8-4084-9b2b-135c91b8477f\\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe\" --AutoStart" 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 9 api.2ip.ua 16 api.2ip.ua 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exedescription pid process target process PID 1876 set thread context of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 set thread context of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exepid process 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 552 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 552 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exedescription pid process target process PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 1876 wrote to memory of 8 1876 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 8 wrote to memory of 3360 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe icacls.exe PID 8 wrote to memory of 3360 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe icacls.exe PID 8 wrote to memory of 3360 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe icacls.exe PID 8 wrote to memory of 3168 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 8 wrote to memory of 3168 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 8 wrote to memory of 3168 8 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe PID 3168 wrote to memory of 552 3168 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe 55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe"C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1876 -
C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe"C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:8 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\efba6a00-32f8-4084-9b2b-135c91b8477f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3360
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C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe"C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3168 -
C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe"C:\Users\Admin\AppData\Local\Temp\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:552
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD51c63500df0b57e29edd1a5867d9f0e9b
SHA10475a0611ac4d171e90b46303b96317fc186b15d
SHA256c8f7c1bd12b80996707a806866379d91dc3008d5d2b0eeeb6d97d418aeeb7914
SHA51229b914ffe63496d98e8ffb76afde49702888743c88bd0fc6aabdf3e8855e3a5389d933a29ccb4564e8d3198c159a1debfb56d6f39f428689f8eb4d497b341bde
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD565052acb8dc97b38007797064162c9a1
SHA1862cf5f74d74b85103b088650a230ed0c6d32df3
SHA256ef406913c83356f132bbc250646c24befee2acfdabbc9debcbca68c1da01a30f
SHA512976f4bd21af190164d04534f4e534d44e14fd5d3c6798421f84ead4e0a53f25d386d4b59bfe0c7c5865af4f22593d975d6b48292b024a4b6ca0d65ff6ee735bd
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD5b5935ea85a497cc30827bacc50e9a62e
SHA1a9423d06d676764909597ecdd5fdfaffad906b56
SHA25695abef24be43ee544d4f73180016c558705692bcecde46948666400ebb176aa4
SHA5129f7b64f6cb967a1de8595078bd3d9ce8e352538d50040000ac21053995348513b1b5352de05d0f9b7827e901cb6cf45eb5de6abbe362f81c92cb9ddc996eec10
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5c25854c8840ee9bfa944b0eee1a15e72
SHA16772fa043abc9cfa09e9e6042722cf87810e0d34
SHA25608c676ee20d6ea4235ed84d20bed2865773d9a03201c7ddd4b608bef3bded6ae
SHA5123b13de92c6176c4fc136e7b0f05160a4d7577e94c93e1a79b26bb806d4f8c0a0e9e61d846c994ab97dcc5246997a78952e59c4ca65f85829b8d9381a6ea4eef8
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C:\Users\Admin\AppData\Local\efba6a00-32f8-4084-9b2b-135c91b8477f\55fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca.exe
MD54fb4323c4ae2d9b629a26e4a7e8247d7
SHA1f79e72a96c5a32dd6763da1df5840c387b5c97c9
SHA25655fe1a26835aa97bd224cc76a11872f60142edd7bf8d5708bc6bcdd6fec55fca
SHA51260149c7f02dac754a64d582efa9cc85ee1bf7552b432801bb33b05a6f3d3bac22487bca5dd6cd66a72586b7c226ad6dcd10c4a3714f9489590680631299de3fc