ramnit | 8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618

Analysis

max time kernel
137s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 04:53

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General

Target

8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618.exe
Size

444KB
MD5

488a375d837dbdc8b5066036a3d02530
SHA1

99662f73dd39de6e86216f1c8b3eeac4daccaf87
SHA256

8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618
SHA512

b3890a1593ad3368677b2818751dfcda967e9b137681959b530d221fb555fda5fc408487f31004ac4b9a18c200b1c0fab6aeae6b52cde4c91e636cdc213310b3
SSDEEP

6144:qumfrAHPxeQJb4OhwX9byBtKqO5Dxa3U0FrgrBvMYqYTJB:q5rAHhJ839e85oU0FErBE14B

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

Executes dropped EXE 2 IoCs

pid	Process
4896	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe
4092	DesktopLayer.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000f000000022e22-133.dat	upx
behavioral2/files/0x000f000000022e22-134.dat	upx
behavioral2/memory/4896-136-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000a000000022e25-139.dat	upx
behavioral2/files/0x000a000000022e25-140.dat	upx
behavioral2/memory/4092-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px78CE.tmp	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2148491989"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{AB0611FE-43E5-11ED-89AC-E23A5D90AA50} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2143334474"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988274"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988274"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2143334474"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988274"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2148491989"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988274"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371653899"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4092	DesktopLayer.exe
4092	DesktopLayer.exe
4092	DesktopLayer.exe
4092	DesktopLayer.exe
4092	DesktopLayer.exe
4092	DesktopLayer.exe
4092	DesktopLayer.exe
4092	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3820	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3820	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3820	iexplore.exe
3820	iexplore.exe
4596	IEXPLORE.EXE
4596	IEXPLORE.EXE
4596	IEXPLORE.EXE
4596	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 4896	5012	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618.exe	81
PID 5012 wrote to memory of 4896	5012	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618.exe	81
PID 5012 wrote to memory of 4896	5012	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618.exe	81
PID 4896 wrote to memory of 4092	4896	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe	82
PID 4896 wrote to memory of 4092	4896	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe	82
PID 4896 wrote to memory of 4092	4896	8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe	82
PID 4092 wrote to memory of 3820	4092	DesktopLayer.exe	83
PID 4092 wrote to memory of 3820	4092	DesktopLayer.exe	83
PID 3820 wrote to memory of 4596	3820	iexplore.exe	84
PID 3820 wrote to memory of 4596	3820	iexplore.exe	84
PID 3820 wrote to memory of 4596	3820	iexplore.exe	84

C:\Users\Admin\AppData\Local\Temp\8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618.exe
"C:\Users\Admin\AppData\Local\Temp\8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe
  C:\Users\Admin\AppData\Local\Temp\8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4092
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3820
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3820 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4596

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
afc3e2584b32e1e7c23c33e9534089a5

SHA1
ea4e2266d010c300621d2287ea60fe3e9a9ee753

SHA256
61597f5f937da250a5ed7b4b82867bebc546a5a35c0029982a003b1e9cbd2e7e

SHA512
f0e0d20b15bc390292baf0d93d982315afc466ccd2d4e48152ed65af97aed573d5b9e65b2b50925cbcd2e736955dfec4f63de5739cdb1499eb2db5dfc3cc4fe6

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
404B

MD5
51e74eeb4bde5f5069bb792d5111eccd

SHA1
43caba0a6b4423f6d2ccad5e529921e224443711

SHA256
f99dfd627a727b44c0b3ad28ba0141a33fe25aa564441f96e47241899b169693

SHA512
977b5496db367e779a986cfeafab0c0f683c2fc38b7937503c8527b19c2ab444986ecf689f9bc592ba5c561972b904e318fcb5c4b5d6dbc4d1d4f21d9736e416

Download Submit
C:\Users\Admin\AppData\Local\Temp\8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\8a8ca4ff4555cb0ca00991a25cf4995c9cb80faf62eacaae5f548411168df618Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/4092-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4896-137-0x0000000002030000-0x000000000203F000-memory.dmp

Filesize
60KB

Download
memory/4896-136-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5012-142-0x0000000000400000-0x00000000004D6000-memory.dmp

Filesize
856KB

Download
memory/5012-143-0x0000000000400000-0x00000000004D6000-memory.dmp

Filesize
856KB

Download
memory/5012-135-0x0000000000400000-0x00000000004D6000-memory.dmp

Filesize
856KB

Download