ramnit | 46d733e1a3a2876e299decf76fd498d66d57d1b49f36dfab706eb0a3fed9ac04

Analysis

max time kernel
139s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/10/2022, 23:15

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General

Target

46d733e1a3a2876e299decf76fd498d66d57d1b49f36dfab706eb0a3fed9ac04.dll
Size

717KB
MD5

a183bc04453d9947a72914a589f06170
SHA1

e46461c730a8630978cff731c7cc473b9a122f00
SHA256

46d733e1a3a2876e299decf76fd498d66d57d1b49f36dfab706eb0a3fed9ac04
SHA512

e6791d2da44f023b25f9f2a357a7c76b0c59cb4e6e1247f3efdd2ced2d36a87a87c7c472302dd860a154e087ad57083a3feea6d5368da7415edeac8de08643c0
SSDEEP

12288:gzb9rMfc+CKUQyUmjtc4euuzPrs9pGp8hunWoopooK9kwPZoP:gzb1MlCKUQyUmjtczu6Prs9pgWoopooh

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
4868	rundll32Srv.exe
4356	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000022e3e-135.dat	upx
behavioral2/files/0x000a000000022e3e-134.dat	upx
behavioral2/files/0x0007000000022e43-137.dat	upx
behavioral2/files/0x0007000000022e43-138.dat	upx
behavioral2/memory/4868-139-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4356-140-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxF8AD.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3110248936"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3110248936"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30993752"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	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\VersionManager	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
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{E00BD929-594B-11ED-89AC-72E07057041D} = "0"	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\LastCheckForUpdateHighDateTime = "30993752"	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\Main	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\LastCheckForUpdateLowDateTime = "3083844426"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3083844426"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30993752"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374006785"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30993752"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	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\Main\WindowsSearch	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\DomainSuggestion\FileNames\	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4356	DesktopLayer.exe
4356	DesktopLayer.exe
4356	DesktopLayer.exe
4356	DesktopLayer.exe
4356	DesktopLayer.exe
4356	DesktopLayer.exe
4356	DesktopLayer.exe
4356	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
756	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
756	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
756	iexplore.exe
756	iexplore.exe
3176	IEXPLORE.EXE
3176	IEXPLORE.EXE
3176	IEXPLORE.EXE
3176	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4968	4928	rundll32.exe	81
PID 4928 wrote to memory of 4968	4928	rundll32.exe	81
PID 4928 wrote to memory of 4968	4928	rundll32.exe	81
PID 4968 wrote to memory of 4868	4968	rundll32.exe	82
PID 4968 wrote to memory of 4868	4968	rundll32.exe	82
PID 4968 wrote to memory of 4868	4968	rundll32.exe	82
PID 4868 wrote to memory of 4356	4868	rundll32Srv.exe	84
PID 4868 wrote to memory of 4356	4868	rundll32Srv.exe	84
PID 4868 wrote to memory of 4356	4868	rundll32Srv.exe	84
PID 4356 wrote to memory of 756	4356	DesktopLayer.exe	86
PID 4356 wrote to memory of 756	4356	DesktopLayer.exe	86
PID 756 wrote to memory of 3176	756	iexplore.exe	87
PID 756 wrote to memory of 3176	756	iexplore.exe	87
PID 756 wrote to memory of 3176	756	iexplore.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\46d733e1a3a2876e299decf76fd498d66d57d1b49f36dfab706eb0a3fed9ac04.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\46d733e1a3a2876e299decf76fd498d66d57d1b49f36dfab706eb0a3fed9ac04.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:4868
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:4356
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:756
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:756 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3176

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
59KB

MD5
3a559adda0a4483b1138c8f50fe28707

SHA1
7ecc8a51a9e9864eb5317cd9fbf5038f50cdb08d

SHA256
f3d6e8b0a74ee958c24cdc3ef529dd24be7fd58ce0d26e443bdca5cf52b357c8

SHA512
fc7bc63f472f02f7a233b93d5986163581e9abf4272c831f4383c77008831aaf48b2ed16951781cadb7cf2d45f5246c74b9e2b15ae24bbae2cdea3de97d7a605

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

Filesize
59KB

MD5
3a559adda0a4483b1138c8f50fe28707

SHA1
7ecc8a51a9e9864eb5317cd9fbf5038f50cdb08d

SHA256
f3d6e8b0a74ee958c24cdc3ef529dd24be7fd58ce0d26e443bdca5cf52b357c8

SHA512
fc7bc63f472f02f7a233b93d5986163581e9abf4272c831f4383c77008831aaf48b2ed16951781cadb7cf2d45f5246c74b9e2b15ae24bbae2cdea3de97d7a605

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

Filesize
471B

MD5
deabbdcb221537d48aed54816739f367

SHA1
9ce0f0d21d9bd08823732047e19edbbd909396bc

SHA256
494de69d83714780f68a1e6871716f3a4a10835e90b4f96e48610c3e8f39e9cf

SHA512
95a80c34ddb83e74e51e5d0884dc7433de78b956db8fb2b1fb54e0f158283991edacafd3e7653161767a69f25f9cf537cc1a654d20e3f27bbc54588b3b4bf5e8

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

Filesize
434B

MD5
93a2feba4b4c3fe5308a757b9b1e27a0

SHA1
094b5def2c1a80743eee9e7537683152ee29b2e7

SHA256
a1d87098543b88fccfc7538026716d708de88194249b6612ec0d101b1cf43443

SHA512
0321aefbb3d1dcef09f008c1dfa3f7a52a99274022efc0bf885ac0150757ec2be21f4e375376c277e47b2727550954fa062ee2ad904d2d0dbb0754d7b4a5b135

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
59KB

MD5
3a559adda0a4483b1138c8f50fe28707

SHA1
7ecc8a51a9e9864eb5317cd9fbf5038f50cdb08d

SHA256
f3d6e8b0a74ee958c24cdc3ef529dd24be7fd58ce0d26e443bdca5cf52b357c8

SHA512
fc7bc63f472f02f7a233b93d5986163581e9abf4272c831f4383c77008831aaf48b2ed16951781cadb7cf2d45f5246c74b9e2b15ae24bbae2cdea3de97d7a605

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
59KB

MD5
3a559adda0a4483b1138c8f50fe28707

SHA1
7ecc8a51a9e9864eb5317cd9fbf5038f50cdb08d

SHA256
f3d6e8b0a74ee958c24cdc3ef529dd24be7fd58ce0d26e443bdca5cf52b357c8

SHA512
fc7bc63f472f02f7a233b93d5986163581e9abf4272c831f4383c77008831aaf48b2ed16951781cadb7cf2d45f5246c74b9e2b15ae24bbae2cdea3de97d7a605

Download Submit
memory/4356-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4868-139-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4968-141-0x0000000005000000-0x00000000050B9000-memory.dmp

Filesize
740KB

Download