Analysis
- max time kernel
297s - max time network
239s - platform
windows10-1703_x64 - resource
win10-20231220-en - resource tags
arch:x64arch:x86image:win10-20231220-enlocale:en-usos:windows10-1703-x64system - submitted
14/01/2024, 22:25
Static task
static1
Behavioral task
behavioral1
Sample
c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe
Resource
win10-20231220-en
General
- Target c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe
- Size 810KB
- Sample240114-2b7qqaecg6
- SHA256 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6
- MD5 07afa7fb45fe53d165679586b77be770
- SHA1 a4065fbfaa0d0344983f5eaa760504845cdc8f87
- SHA512 a47911bd2fdbb476c9ca96a253f9737411f562185da9f064b6698994cefe9f34187e29ba3be315a2abfba7ef746aff2aaa8b1bda793b4c89c918b6665ef66440
- SSDEEP 12288:2xkismkgVjrrwdGmfO/SYQiU9By6FKhQseDMqfnu+qcspmi177gJzWF:wkgVaGwO/xXUPy6ohdeAqBqc7z
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
djvu
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http://zexeq.com/test1/get.php
-
extension
.cdwe
-
offline_id
dSwr1XNNi5cIitB5eDPbMANcusB1dWGDB8ToUnt1
-
payload_url
http://brusuax.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
-
ransomnote
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Signatures
- Detect Vidar Stealer 5 IoCs
resource yara_rule behavioral2/memory/3852-44-0x00000000006F0000-0x000000000073B000-memory.dmp family_vidar_v6 behavioral2/memory/532-45-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 behavioral2/memory/532-43-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 behavioral2/memory/532-39-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 behavioral2/memory/532-51-0x0000000000400000-0x000000000065E000-memory.dmp family_vidar_v6 - Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/2156-2-0x00000000026A0000-0x00000000027BB000-memory.dmp family_djvu behavioral2/memory/3620-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3620-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3620-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3620-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3620-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1788-57-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 3852 build2.exe 532 build2.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 1412 icacls.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3934047325-4097474570-3437169968-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\445b27b3-d7d1-4b34-8bdb-13c9cd7dcdfa\\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe\" --AutoStart" c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.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.
flow ioc 10 api.2ip.ua 1 api.2ip.ua 2 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 2156 set thread context of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 3080 set thread context of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3852 set thread context of 532 3852 build2.exe 79 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
pid pid_target Process procid_target 5012 532 WerFault.exe 79 - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 1788 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 1788 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe - Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 2156 wrote to memory of 3620 2156 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 74 PID 3620 wrote to memory of 1412 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 75 PID 3620 wrote to memory of 1412 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 75 PID 3620 wrote to memory of 1412 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 75 PID 3620 wrote to memory of 3080 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 77 PID 3620 wrote to memory of 3080 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 77 PID 3620 wrote to memory of 3080 3620 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 77 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 3080 wrote to memory of 1788 3080 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 78 PID 1788 wrote to memory of 3852 1788 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 80 PID 1788 wrote to memory of 3852 1788 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 80 PID 1788 wrote to memory of 3852 1788 c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe 80 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79 PID 3852 wrote to memory of 532 3852 build2.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe"C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2156 -
C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe"C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3620 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\445b27b3-d7d1-4b34-8bdb-13c9cd7dcdfa" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1412
-
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C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe"C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe"C:\Users\Admin\AppData\Local\Temp\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1788 -
C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe"C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3852
-
-
-
-
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C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe"C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe"1⤵
- Executes dropped EXE
PID:532 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 532 -s 18642⤵
- Program crash
PID:5012
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
- Size 1KB
- SHA256 0da3f6452b91947ed4ad5e11a34cb348a7da0276e2ee8f8f27d5f3b3987dd1bd
- MD5 3b8718bd7867f0d32922fc6eb112e52f
- SHA1 f2667fa1606dbb70afd3a265a94badd166cf84d6
- SHA512 547ddb54df5a51317868ba80164c05e706d0e8900a1db228af4c5c3cb4297e2fe4ecd65a67d83eb797c23217cb1246f07bd3848b5c97b7c7df37ee270e93ebd7
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
- Size 724B
- SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
- MD5 8202a1cd02e7d69597995cabbe881a12
- SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
- SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
- Size 410B
- SHA256 97b664062a4882896e4df7071dc5e844da2415cce3b114086e45c6be8b17b5fe
- MD5 5b3a85309da9fa17b1f927f36e63a476
- SHA1 d96f1f57172b581520dbdd63c76f7d4a51d26583
- SHA512 262e20b1b4bb1d406e8b4feef76ccde07ade705fa93a2928289733b0de6ac069ff36139252b39c150e2d3ecfa63c152744594ee6490184ed1935192da7adc3c9
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
- Size 392B
- SHA256 d20083343cf703ef1871a31a8936e0fa219394d0dffbe5583b2e1cc8b0294bd5
- MD5 399eb768fab894aacb2ff3a3135f0a58
- SHA1 4159194981d14c3414241c22ea747ed37bee23f8
- SHA512 acc709d0980aa34234c1a88beda6597ff5d35f4fe3dd1973a9273fb7c1f63223310bd01c77da07f77a81b6d3ea41ad2bb8f6808c52d9ae36c570bf2811df3c1a
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\445b27b3-d7d1-4b34-8bdb-13c9cd7dcdfa\c02005305c2ccc9e74c9a43ba13aadaf32b07e6af5b1620172ef47ee798fc9a6.exe
- Size 1KB
- SHA256 372b2c78bc949cf83d0af57d1efed44dbb657251836362c216498875ffd252f2
- MD5 d7ca20326ae9ae24070e72b9dc50685c
- SHA1 d14c09d75272843df33d84903d8c6c344e3314ba
- SHA512 13d05cc101f46d9ce09bf8ae1b95bd9bdf392d5c8f3f4a245093aa513415525b6c2c7f4524872e675715edfc9b35557a2252cc4ece2bec19cb62ce1cda607a95
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe
- Size 227KB
- SHA256 75cc156a4b8c94fccc0de0b848f3b94f5591a94a261d14009db1686ce3d54785
- MD5 3962f259c7ac7d86e6a151e73228137c
- SHA1 2e229eddd3f3ee4f08378bc53795add0dc88ba38
- SHA512 2c86d82fe4475c28a75d48ddf484c666980e27332046db5e797721f9e68f7b3807e1d4f648bf2fee6fe875e7c46db5562a078224de9b12ce382d7a2fa1c3b76e
- SSDEEP 3072:paxQLapbXGgtyhJiK61Ko+Eknjw15ZPVcu8l3EmzjkvjW4VTR1gagQAp3TXd:pfLgtyckjU51Vc7lLUvTlR2agQAH
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe
- Size 294KB
- SHA256 e0d6c51df144a7a04b4cd5fbcd5d648c999418aedae357c161e1f818746349fb
- MD5 acfc4392d38fc420425a54a8ace6c030
- SHA1 b4b03adc6b5e7055bbd986aac0ecd641e5b614be
- SHA512 96e3b330c2076d3a2562c6ef84106e0ddbc305a8995baf519395989add6140121c8060cfb9a78f3efbdb1d8899a4a97f262e5f892724fa28754d795aa788a41e
- SSDEEP 6144:pfLgtyckjU51Vc7lLUvTlR2agQAYNMQSn:pfMtycGU5/klLUvTlR5Aiu
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\79f551c3-e1a2-41e6-a616-6469460e31f0\build2.exe
- Size 137KB
- SHA256 98d7524c5cae301073a5b2dc83ee3f3094537b49d0d8bfad31e0e1657645c739
- MD5 d0a332c95c214162200bbded95d1e1df
- SHA1 55312d17663294d17a1b9dd6d72d56286c356458
- SHA512 c95e9e253cbf8ab62e92b3153c8e62cc6e5255230179ce66cee26609b50f60fe22c2617c5813d4ecf59c19cf8bb282364ae94a1aff50bd42218ba02157d825bf
- SSDEEP 3072:paxQLapbXGgtyhJiK61Ko+Eknjw15ZPVc0:pfLgtyckjU51Vc0
- MD5 SHA1 SHA512 SSDEEP