Analysis
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max time kernel
118s -
max time network
123s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
28-11-2021 03:34
Static task
static1
Behavioral task
behavioral1
Sample
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe
Resource
win10-en-20211104
General
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Target
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe
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Size
834KB
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MD5
9bdabffd2de4de7217bd3cf724264bca
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SHA1
b9abda8c97459e28161f8fb5fc61ffa2e0c49483
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SHA256
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6
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SHA512
444a7aee018613dbe97efa1fc7387b2949338f9bf64e63434a53996fc95a3de594928fa3f93be53d0a694acafa0f96ae65da7577b0007b66169073efbf96f001
Malware Config
Extracted
djvu
http://tzgl.org/fhsgtsspen6/get.php
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extension
.rigj
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offline_id
Z5GGASEfY71jtxU3i3E8kzvrTJmY9oiZkjcSm0t1
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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/432-120-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/432-119-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/432-122-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3620-121-0x0000000005140000-0x000000000525B000-memory.dmp family_djvu behavioral1/memory/3200-128-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/3200-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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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:
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c6b20c6b-4f4b-44ce-a74e-cdee8f36a0b0\\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe\" --AutoStart" 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.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 17 api.2ip.ua 18 api.2ip.ua 31 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exedescription pid process target process PID 3620 set thread context of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 set thread context of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exepid process 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3200 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3200 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exedescription pid process target process PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 3620 wrote to memory of 432 3620 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 432 wrote to memory of 4076 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe icacls.exe PID 432 wrote to memory of 4076 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe icacls.exe PID 432 wrote to memory of 4076 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe icacls.exe PID 432 wrote to memory of 4212 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 432 wrote to memory of 4212 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 432 wrote to memory of 4212 432 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe PID 4212 wrote to memory of 3200 4212 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe 3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe"C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3620 -
C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe"C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:432 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c6b20c6b-4f4b-44ce-a74e-cdee8f36a0b0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4076
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C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe"C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4212 -
C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe"C:\Users\Admin\AppData\Local\Temp\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3200
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD59dc67b11ad67886d83ec9cbf7922f317
SHA1421eb58463bb0c726479bcc32f548de29991ebeb
SHA256d2f4acc07d8bf2b562029cc85eec1b52bd37be9f276a927f565610e109308ead
SHA512ea5995232251a3e161769484f6a49624f656ea94cc2545477daec56c3536736cee0f8554af535ca7a82e5fc687e5ee56c5955b32726b8c2c21d28c538d25b367
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5b3439cbad3deec29218c20b7294ccd3c
SHA101f1ecbc00e38042701d9969fd44466465ed3147
SHA25680975f1efe7637a0b5cfd772b5eb35f7ad19e698ce674aacad7eb779c0f62249
SHA51233fe0b38252890ef561a95f5ca661b8f3cc71df632c8939914869980672847dcd19527a0d9e1d79f274dc328b5aad5b5bf6229c4ab9ede0cb69d87d57af9d9c4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD54d8d50ec0f813cd404a7642689c95b2f
SHA166a3ead6c0b92b6db3d09c4a2fe16841c3f69e8f
SHA2561553022ba5e5423f9fb5da8ab130a963fecaee99753f01de10a5651bac2fdb24
SHA51254acf5e216cc7552187a2ef664d6249be71dd30b4735a503a579f2a085080a027562a95fc428d2b0c7cf2e5414e185380e1fd90d219884ce5d18559725ceb38a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD596ed956fce332f6d1ca34f97616d7075
SHA1b3ecd3f2cf8bfe4df7edb6e484d7f6d459bbc2c7
SHA2569d72765676317f2d6a8bf1d6e91ee57b4d51043f95b19875370cceed8082b983
SHA512925520a3b6bc74107322bea9bbf7670e5b526efdcdd77ea780c472803d25a9792f014137a729d5efe873b84867e4c6117e20b674305f929cdb7329df1310fe72
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C:\Users\Admin\AppData\Local\c6b20c6b-4f4b-44ce-a74e-cdee8f36a0b0\3b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6.exe
MD59bdabffd2de4de7217bd3cf724264bca
SHA1b9abda8c97459e28161f8fb5fc61ffa2e0c49483
SHA2563b8b7059cc6b91698fb241feca65ea30b321dc918a59809bf57191af2c6e63a6
SHA512444a7aee018613dbe97efa1fc7387b2949338f9bf64e63434a53996fc95a3de594928fa3f93be53d0a694acafa0f96ae65da7577b0007b66169073efbf96f001