ramnit | 81b64a354103b21b8d7f2bebb62923b5c2bc4f7f9cba5197fc24b5d869c032be

General

Target

virussign.dll
Size

844KB
MD5

4fc335703cfb06c1c8e82b3faa80f8d0
SHA1

07d6349c60aabca12c95d4417413881d2d2d72d9
SHA256

81b64a354103b21b8d7f2bebb62923b5c2bc4f7f9cba5197fc24b5d869c032be
SHA512

aca6e1720963628d3e24d2867b003d2b7dd64f4d8da2c9b029c5779544503b6e3a1ba632a1b60f041e9084b85414294ba226256aebabf3d5579cda4d2599ce08

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

ACProtect 1.3x - 1.4x DLL software 4 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\oqiA9A2.tmp	acprotect
C:\Users\Admin\AppData\Local\Temp\oqiA9A2.tmp	acprotect
C:\Users\Admin\AppData\Local\Temp\oriAC90.tmp	acprotect
C:\Users\Admin\AppData\Local\Temp\oriAC90.tmp	acprotect

Executes dropped EXE 2 IoCs

Processes:

rundll32Srv.exeDesktopLayer.exe

pid process

2116 rundll32Srv.exe
4724 DesktopLayer.exe

pid	process
2116	rundll32Srv.exe
4724	DesktopLayer.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\rundll32Srv.exe	upx
C:\Windows\SysWOW64\rundll32Srv.exe	upx
behavioral2/memory/2116-137-0x0000000000400000-0x000000000042F000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral2/memory/2116-141-0x0000000000400000-0x000000000042F000-memory.dmp	upx
behavioral2/memory/4724-147-0x0000000000400000-0x000000000042F000-memory.dmp	upx

Loads dropped DLL 4 IoCs

Processes:

rundll32Srv.exeDesktopLayer.exe

pid process

2116 rundll32Srv.exe
2116 rundll32Srv.exe
4724 DesktopLayer.exe
4724 DesktopLayer.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe

pid	process
2116	rundll32Srv.exe
2116	rundll32Srv.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe

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

Drops file in Program Files directory 3 IoCs

Processes:

rundll32Srv.exe

description	ioc	process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxABC6.tmp	rundll32Srv.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30971603"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364493608"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "627405208"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "627405208"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30971603"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{50E1AC2B-02C6-11ED-B274-7E7E0F8D8E49} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
4724	DesktopLayer.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe
4724	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

2472 iexplore.exe
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

rundll32Srv.exeDesktopLayer.exeiexplore.exeIEXPLORE.EXE

pid process

2116 rundll32Srv.exe
4724 DesktopLayer.exe
2472 iexplore.exe
2472 iexplore.exe
1216 IEXPLORE.EXE
1216 IEXPLORE.EXE
1216 IEXPLORE.EXE
1216 IEXPLORE.EXE

pid	process
2472	iexplore.exe

pid	process
2116	rundll32Srv.exe
4724	DesktopLayer.exe
2472	iexplore.exe
2472	iexplore.exe
1216	IEXPLORE.EXE
1216	IEXPLORE.EXE
1216	IEXPLORE.EXE
1216	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 3584 wrote to memory of 4476	3584	rundll32.exe	rundll32.exe
PID 3584 wrote to memory of 4476	3584	rundll32.exe	rundll32.exe
PID 3584 wrote to memory of 4476	3584	rundll32.exe	rundll32.exe
PID 4476 wrote to memory of 2116	4476	rundll32.exe	rundll32Srv.exe
PID 4476 wrote to memory of 2116	4476	rundll32.exe	rundll32Srv.exe
PID 4476 wrote to memory of 2116	4476	rundll32.exe	rundll32Srv.exe
PID 2116 wrote to memory of 4724	2116	rundll32Srv.exe	DesktopLayer.exe
PID 2116 wrote to memory of 4724	2116	rundll32Srv.exe	DesktopLayer.exe
PID 2116 wrote to memory of 4724	2116	rundll32Srv.exe	DesktopLayer.exe
PID 4724 wrote to memory of 2472	4724	DesktopLayer.exe	iexplore.exe
PID 4724 wrote to memory of 2472	4724	DesktopLayer.exe	iexplore.exe
PID 2472 wrote to memory of 1216	2472	iexplore.exe	IEXPLORE.EXE
PID 2472 wrote to memory of 1216	2472	iexplore.exe	IEXPLORE.EXE
PID 2472 wrote to memory of 1216	2472	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\virussign.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3584

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\virussign.dll,#1
2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4476

C:\Windows\SysWOW64\rundll32Srv.exe
C:\Windows\SysWOW64\rundll32Srv.exe
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2116

C:\Program Files (x86)\Microsoft\DesktopLayer.exe
"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4724

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe"
5⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2472

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2472 CREDAT:17410 /prefetch:2
6⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1216

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe
Filesize
228KB

MD5
aca5487a29ce8985398fc80fde1b5655

SHA1
2ab36b6dfed1b33f29ed539f330c791e2644c504

SHA256
4d8c5a2d56a1f781f0189f728b0230b54aefb2a7fa869e86d480eadd9c2aca59

SHA512
5f0da8c5022da0ea06ee3793f79202f98b2d0ccbebc6ed11fb570231e37cf34a145900e27bf432bf410b8b8ddfe1774da0ad753232371fb7d1eb3f54a111ad4c

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe
Filesize
228KB

MD5
aca5487a29ce8985398fc80fde1b5655

SHA1
2ab36b6dfed1b33f29ed539f330c791e2644c504

SHA256
4d8c5a2d56a1f781f0189f728b0230b54aefb2a7fa869e86d480eadd9c2aca59

SHA512
5f0da8c5022da0ea06ee3793f79202f98b2d0ccbebc6ed11fb570231e37cf34a145900e27bf432bf410b8b8ddfe1774da0ad753232371fb7d1eb3f54a111ad4c

Download Submit
C:\Users\Admin\AppData\Local\Temp\oqiA9A2.tmp
Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\oqiA9A2.tmp
Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\oriAC90.tmp
Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\oriAC90.tmp
Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe
Filesize
228KB

MD5
aca5487a29ce8985398fc80fde1b5655

SHA1
2ab36b6dfed1b33f29ed539f330c791e2644c504

SHA256
4d8c5a2d56a1f781f0189f728b0230b54aefb2a7fa869e86d480eadd9c2aca59

SHA512
5f0da8c5022da0ea06ee3793f79202f98b2d0ccbebc6ed11fb570231e37cf34a145900e27bf432bf410b8b8ddfe1774da0ad753232371fb7d1eb3f54a111ad4c

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe
Filesize
228KB

MD5
aca5487a29ce8985398fc80fde1b5655

SHA1
2ab36b6dfed1b33f29ed539f330c791e2644c504

SHA256
4d8c5a2d56a1f781f0189f728b0230b54aefb2a7fa869e86d480eadd9c2aca59

SHA512
5f0da8c5022da0ea06ee3793f79202f98b2d0ccbebc6ed11fb570231e37cf34a145900e27bf432bf410b8b8ddfe1774da0ad753232371fb7d1eb3f54a111ad4c

Download Submit
memory/2116-138-0x00000000020B0000-0x0000000002123000-memory.dmp

Filesize
460KB

Download
memory/2116-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2116-141-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2116-143-0x00000000020B0000-0x0000000002123000-memory.dmp

Filesize
460KB

Download
memory/2116-131-0x0000000000000000-mapping.dmp

Download
memory/4476-130-0x0000000000000000-mapping.dmp

Download
memory/4476-136-0x0000000074D10000-0x0000000074DE5000-memory.dmp

Filesize
852KB

Download
memory/4724-139-0x0000000000000000-mapping.dmp

Download
memory/4724-146-0x0000000000580000-0x00000000005F3000-memory.dmp

Filesize
460KB

Download
memory/4724-147-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads