Analysis
- max time kernel
147s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
03/04/2024, 21:27
Static task
static1
Behavioral task
behavioral1
Sample
a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe
Resource
win7-20240221-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe
- Size 985KB
- Sample240403-1awrdsdf36
- SHA256 890c9830635eb1674ed15a65790905fbe3ad80eb087ee7433e6da159ddc5cb00
- MD5 a716d9eeea5b456cfdec69a1b34ccc96
- SHA1 e757774843c0305a05ee18159f180ae71511c45b
- SHA512 d5516c9b71a21db1867c7861ec472626de5969bf1293eea7a8964830401435cc0b73f9673e768b6652a8611a539331911aa3df6527c3a5daf61cf43ac25a1104
- SSDEEP 24576:yQHyDJBjAObi4M2rIDTU4fmj6J/d28+buJqQlxTB8mv:yQSdBfbiyrIDovj6ldnkQlVB3
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
oski
C2
-
45.87.2.131
Signatures
- Oski
Oski is an infostealer targeting browser data, crypto wallets.
- Manipulates Digital Signatures 1 TTPs 3 IoCs
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.1!7\Name = "szOID_ROOT_PROGRAM_AUTO_UPDATE_CA_REVOCATION" certutil.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.2!7\Name = "szOID_ROOT_PROGRAM_AUTO_UPDATE_END_REVOCATION" certutil.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.3!7\Name = "szOID_ROOT_PROGRAM_NO_OCSP_FAILOVER_TO_CRL" certutil.exe - Executes dropped EXE 3 IoCs
pid Process 4620 winlogon.com 2924 winlogon.com 4900 winlogon.com - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2924 set thread context of 4900 2924 winlogon.com 103 - Program crash 2 IoCs
pid pid_target Process procid_target 5008 4900 WerFault.exe 103 1688 4900 WerFault.exe 103 - Runs ping.exe 1 TTPs 2 IoCs
pid Process 3076 PING.EXE 1856 PING.EXE - Suspicious use of FindShellTrayWindow 6 IoCs
pid Process 4620 winlogon.com 4620 winlogon.com 4620 winlogon.com 2924 winlogon.com 2924 winlogon.com 2924 winlogon.com - Suspicious use of SendNotifyMessage 6 IoCs
pid Process 4620 winlogon.com 4620 winlogon.com 4620 winlogon.com 2924 winlogon.com 2924 winlogon.com 2924 winlogon.com - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4036 wrote to memory of 1600 4036 a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe 85 PID 4036 wrote to memory of 1600 4036 a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe 85 PID 4036 wrote to memory of 1600 4036 a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe 85 PID 1600 wrote to memory of 2708 1600 cmd.exe 87 PID 1600 wrote to memory of 2708 1600 cmd.exe 87 PID 1600 wrote to memory of 2708 1600 cmd.exe 87 PID 2708 wrote to memory of 3076 2708 cmd.exe 89 PID 2708 wrote to memory of 3076 2708 cmd.exe 89 PID 2708 wrote to memory of 3076 2708 cmd.exe 89 PID 2708 wrote to memory of 1692 2708 cmd.exe 90 PID 2708 wrote to memory of 1692 2708 cmd.exe 90 PID 2708 wrote to memory of 1692 2708 cmd.exe 90 PID 2708 wrote to memory of 4620 2708 cmd.exe 93 PID 2708 wrote to memory of 4620 2708 cmd.exe 93 PID 2708 wrote to memory of 4620 2708 cmd.exe 93 PID 2708 wrote to memory of 1856 2708 cmd.exe 94 PID 2708 wrote to memory of 1856 2708 cmd.exe 94 PID 2708 wrote to memory of 1856 2708 cmd.exe 94 PID 4620 wrote to memory of 2924 4620 winlogon.com 95 PID 4620 wrote to memory of 2924 4620 winlogon.com 95 PID 4620 wrote to memory of 2924 4620 winlogon.com 95 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103 PID 2924 wrote to memory of 4900 2924 winlogon.com 103
Processes
-
C:\Users\Admin\AppData\Local\Temp\a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a716d9eeea5b456cfdec69a1b34ccc96_JaffaCakes118.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Windows\SysWOW64\cmd.execmd /c cmd < URirtTcZTgDGUQbemk.com2⤵
- Suspicious use of WriteProcessMemory
PID:1600 -
C:\Windows\SysWOW64\cmd.execmd3⤵
- Suspicious use of WriteProcessMemory
PID:2708 -
C:\Windows\SysWOW64\PING.EXEping -n 1 EQcI.sDZ4⤵
- Runs ping.exe
PID:3076
-
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C:\Windows\SysWOW64\certutil.execertutil -decode wFhAqQFeTfPmKWtV.com H4⤵
- Manipulates Digital Signatures
PID:1692
-
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winlogon.comwinlogon.com H4⤵
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4620 -
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winlogon.comC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winlogon.com H5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winlogon.comC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winlogon.com6⤵
- Executes dropped EXE
PID:4900 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4900 -s 12287⤵
- Program crash
PID:5008
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4900 -s 12607⤵
- Program crash
PID:1688
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-
-
-
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 34⤵
- Runs ping.exe
PID:1856
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-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4900 -ip 49001⤵PID:4844
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4900 -ip 49001⤵PID:3764
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\ProgramData\msvcp140.dll
- Size 273B
- SHA256 e020b09fdbe37971c011fa1f13ab24f20092c07baf331287666d333467bb03a0
- MD5 ccfc8ab23a9953199a432861b4e0de7e
- SHA1 04487a1cfaa670a40fdc0bf6b5fb076cbc7f8c87
- SHA512 67cc519b9e519a0a30409e0511dd590a3074a2e45c1bf7e250114de5dcad545375c89242c51a838b52e04d0d934b9ba83c514a56389d5ff8055179b12f7f23d1
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\H
- Size 493KB
- SHA256 251156300dc58346dafbe4547985647b1c624dde9dac7f303019ccad42c096c4
- MD5 9524d7b3a00ece4d4fa333165f539c9e
- SHA1 ee1afa76cb6e29db17764b9984f0bc594102fd62
- SHA512 32b5d434506725eaf7f7f7729097ddec529881e633ddecddc065611c303d4b92d3d027e71a4a887eb27df3b36e4519baba563b24303ba65ccfae1cb65fe364c3
- SSDEEP 6144:0SbvqB8a05Tft4AGq7pUZmQOUPPNNakZsKxdaPlbMXRcXbXJZeJ:0SzIyahfvNwk+PpXb5A
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\URirtTcZTgDGUQbemk.com
- Size 358B
- SHA256 337c2d3990188ce1ac1e225b586270da3d49e9c12e9e6a78b4c693e0fa3bdc69
- MD5 849f5d7dea7512855df4aa0efa683d46
- SHA1 cb8f34c8696a9905383649d39e6fb4470f2b3b15
- SHA512 1809c3f641fe34cca73a58e6da4dad458f24f3eb22188aa6f545fc310efeb0dd4811797ba8f2df43fa79b38d08331f5b7920ecec9126f855a48395371fff4ea2
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ZOECwPkNX.com
- Size 921KB
- SHA256 ccefe3c453a32c04dd03e835879aceae0b96e7d25359dc05a8cfa7a880c21936
- MD5 df6fbc5de331f39be67e2b343ff02083
- SHA1 2791147f5aba7d5242d531f0444695b9fecb3c42
- SHA512 35e1b55975104e9ddf24fc2842848f63c954f6e69bf8a4df370caaad43ff01f259fbd4e96e45bcbd2287192551afa3df5f9ad8726a3331d80a9c53fa558bf8a9
- SSDEEP 24576:wJs7DlG83U/hcSO3UTyYPeuZtxY+8aiB8ea:wC7hGOSPT/PxebaiO
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\jtLmogvJ.com
- Size 200KB
- SHA256 3599a4a60536804cc36edd8acb49861799892870ed728eea898fda2eff14074f
- MD5 92d41846075c70c50db6181bd85ef622
- SHA1 7ae2891bbc3d4c81eb3c214e0f0e6fa1071381fb
- SHA512 ab5d92242cffc2787a503cf708bd5a89dabc60f7a5c039b1b940e415d9ddb02f7987855cff5417777e1375160fa5ef524acf187995f0ca30b2d0c931c25483c4
- SSDEEP 3072:Vp44GtK0rk1gszl8rRP4AC6/EeqI4uA7fr3DeK/1p6GB2Jaf5WHJWGVH/4Qwv6Z5:DWApzl+4ArLA75n6GB2JkuJPVH5vB8Rq
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\wFhAqQFeTfPmKWtV.com
- Size 678KB
- SHA256 8554810aa4cd6aaf265bcb0f53a77bda66318d2d8654b1942f5b8e5ed8ae6e31
- MD5 956bdc5c52451334027c30a37df6623c
- SHA1 b2cac7317ab6c52f72034d9d08bcc39d58ea08b6
- SHA512 8f519cd12517552ea04873b1dae65bb4a24d5ab2fab24dedf5e06c36837fb5931602091c046ac96fe55ce7424ecdf4288c2a516e1e1449c646fd39664aed9f5f
- SSDEEP 6144:4OQdMrdcVToh4qG8BfKo86m2ftsAqUY935zk03FLw9KIgNGo54Fa:rcVTyG8BfKo86mAzWyv854Fa
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winlogon.com
- Size 921KB
- SHA256 05d8cf394190f3a707abfb25fb44d7da9d5f533d7d2063b23c00cc11253c8be7
- MD5 78ba0653a340bac5ff152b21a83626cc
- SHA1 b12da9cb5d024555405040e65ad89d16ae749502
- SHA512 efb75e4c1e0057ffb47613fd5aae8ce3912b1558a4b74dbf5284c942eac78ecd9aca98f7c1e0e96ec38e8177e58ffdf54f2eb0385e73eef39e8a2ce611237317
- SSDEEP 24576:FJs7DlG83U/hcSO3UTyYPeuZtxY+8aiB8ea:FC7hGOSPT/PxebaiO
- MD5 SHA1 SHA512 SSDEEP