Analysis
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max time kernel
128s -
max time network
129s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
28-11-2021 09:17
Static task
static1
Behavioral task
behavioral1
Sample
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe
Resource
win10-en-20211104
General
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Target
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe
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Size
830KB
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MD5
3d7584ad6e6acf5057ef7481a51cf8eb
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SHA1
e324eeb54a2a864335a61c5a14294e8ef6be1518
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SHA256
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839
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SHA512
18a51dcb87731412bf38a1c227cf9bbdb12fceb87d8f44307dfea91b3d8c8170f10afb95fea00c1b45a2146c563d09f8a38d9edb759fc504aeb3de3a4636252d
Malware Config
Extracted
djvu
http://tzgl.org/lancer/get.php
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extension
.robm
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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 7 IoCs
Processes:
resource yara_rule behavioral1/memory/2500-119-0x0000000003610000-0x000000000372B000-memory.dmp family_djvu behavioral1/memory/3524-120-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3524-121-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/3524-122-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3032-128-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/3032-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1240-133-0x00000000033E0000-0x000000000352A000-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:
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.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\\d6aea8c4-94b8-44e2-ab18-9c8ecf0e5ede\\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe\" --AutoStart" 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.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 27 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exedescription pid process target process PID 2500 set thread context of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 set thread context of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exepid process 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 3032 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 3032 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exedescription pid process target process PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 2500 wrote to memory of 3524 2500 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 3524 wrote to memory of 3312 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe icacls.exe PID 3524 wrote to memory of 3312 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe icacls.exe PID 3524 wrote to memory of 3312 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe icacls.exe PID 3524 wrote to memory of 1240 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 3524 wrote to memory of 1240 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 3524 wrote to memory of 1240 3524 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe PID 1240 wrote to memory of 3032 1240 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe 2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe"C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2500 -
C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe"C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3524 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d6aea8c4-94b8-44e2-ab18-9c8ecf0e5ede" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3312
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C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe"C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1240 -
C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe"C:\Users\Admin\AppData\Local\Temp\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3032
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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
MD5e2eae6fca18e084ea35b7b81f042f92d
SHA10d3656dec624b1770211eec9fcfae6389a87b486
SHA256d08deb604c8bfb0be62d926650f695e938e5cbcb20c1a8a2a0256d514878b256
SHA5129d6c48870d9fbd92ae6a39395d05496d86d3aba83d7d58c532011c3c8331af21558e140b6882644f39edfa2c864aa95e48ab4a58e785b618e9bbb3f6853358c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD587825e1eb8717e92d445f8495a30fc4f
SHA1492c119067568a4b57a887329887ddfa875f8827
SHA2560ab66d3ca94439bc9e59024f310c7ea730ef02a334cb15d44f55e2b43579b953
SHA5127630e1d8c87119e935b176d3ea92955107dfbf66e4404e10c192e73705b3a8c0e4f1c51480a31840bdd9261aed19a01cd913e6dd81a4da80c3086d74b93be2cc
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C:\Users\Admin\AppData\Local\d6aea8c4-94b8-44e2-ab18-9c8ecf0e5ede\2b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839.exe
MD53d7584ad6e6acf5057ef7481a51cf8eb
SHA1e324eeb54a2a864335a61c5a14294e8ef6be1518
SHA2562b1cfed6d22fa4189d586bc0be959af00aa70be2600c5bb791d6d297a7b10839
SHA51218a51dcb87731412bf38a1c227cf9bbdb12fceb87d8f44307dfea91b3d8c8170f10afb95fea00c1b45a2146c563d09f8a38d9edb759fc504aeb3de3a4636252d