ramnit | 7e41f43275f79de584731ac3682d085df368ec8e844bf3f763d28378132b4849

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 08:12

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General

Target

7e41f43275f79de584731ac3682d085df368ec8e844bf3f763d28378132b4849.dll
Size

160KB
MD5

f17a942c372ace091d4e3326b654f911
SHA1

1a13fcb856dd00683674b81ffb40f9b8b4275f10
SHA256

7e41f43275f79de584731ac3682d085df368ec8e844bf3f763d28378132b4849
SHA512

69d12a47223f04f8e21b30f662de56eeba68c9f98fb3dc9aa864f89bb439e069947b982f72ea91a73034ba1142e5b3e382463cf45af4dbc7e8a1c9d2647bfbb0
SSDEEP

3072:K61Ye3TaEu2CoCcn3zO7A4D8XHLC/6CqX2n2sv566sJrlcWAP:HTa12CoCckAe87CnqX2L4JrlcLP

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
4124	rundll32mgr.exe
3304	WaterMark.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4124-140-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4124-141-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4124-145-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3304-152-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-153-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-154-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-155-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-157-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-158-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-159-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-160-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/3304-161-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px84B1.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4304	3224	WerFault.exe	84
2272	2176	WerFault.exe	79

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2441745379"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2441745379"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30999269"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{BAF9C965-6ED8-11ED-AECB-FA09CB65A760} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30999269"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2499715464"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "376376247"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30999269"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe
3304	WaterMark.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3364	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3364	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3364	iexplore.exe
3364	iexplore.exe
1896	IEXPLORE.EXE
1896	IEXPLORE.EXE
1896	IEXPLORE.EXE
1896	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
4124	rundll32mgr.exe
3304	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 2176	3440	rundll32.exe	79
PID 3440 wrote to memory of 2176	3440	rundll32.exe	79
PID 3440 wrote to memory of 2176	3440	rundll32.exe	79
PID 2176 wrote to memory of 4124	2176	rundll32.exe	80
PID 2176 wrote to memory of 4124	2176	rundll32.exe	80
PID 2176 wrote to memory of 4124	2176	rundll32.exe	80
PID 4124 wrote to memory of 3304	4124	rundll32mgr.exe	82
PID 4124 wrote to memory of 3304	4124	rundll32mgr.exe	82
PID 4124 wrote to memory of 3304	4124	rundll32mgr.exe	82
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3224	3304	WaterMark.exe	84
PID 3304 wrote to memory of 3248	3304	WaterMark.exe	86
PID 3304 wrote to memory of 3248	3304	WaterMark.exe	86
PID 3304 wrote to memory of 3364	3304	WaterMark.exe	87
PID 3304 wrote to memory of 3364	3304	WaterMark.exe	87
PID 3364 wrote to memory of 1896	3364	iexplore.exe	90
PID 3364 wrote to memory of 1896	3364	iexplore.exe	90
PID 3364 wrote to memory of 1896	3364	iexplore.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e41f43275f79de584731ac3682d085df368ec8e844bf3f763d28378132b4849.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e41f43275f79de584731ac3682d085df368ec8e844bf3f763d28378132b4849.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:4124
  - - C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:3304
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:3224
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3224 -s 212
        6⤵
        Program crash
        
        PID:4304
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:3248
    - - 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:3364
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3364 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1896
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2176 -s 608
    3⤵
    - Program crash
    PID:2272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2176 -ip 2176
1⤵
PID:5080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3224 -ip 3224
1⤵
PID:3744

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\WaterMark.exe

Filesize
95KB

MD5
8e617cbfd82e7d8b1e714f2b4f27d84f

SHA1
bcf77c9799fd933f23ce344d2c46081dec46ebb2

SHA256
75b0313a8289f2e8bef73aa7599d96e661b6d3840fb32d330bc3cd924240b69e

SHA512
3809686bd7d4c03cab6ce7e438115ecf224955fe55d2c8784e16d9df1d30c86b047017536435e059a9bda2e30a29263139336ebcab662d2a281f9c7dc2792d79

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

Filesize
95KB

MD5
8e617cbfd82e7d8b1e714f2b4f27d84f

SHA1
bcf77c9799fd933f23ce344d2c46081dec46ebb2

SHA256
75b0313a8289f2e8bef73aa7599d96e661b6d3840fb32d330bc3cd924240b69e

SHA512
3809686bd7d4c03cab6ce7e438115ecf224955fe55d2c8784e16d9df1d30c86b047017536435e059a9bda2e30a29263139336ebcab662d2a281f9c7dc2792d79

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

Filesize
471B

MD5
3bc8595d0a469edc8b7a071a3befe724

SHA1
f7e4b53b01d31626ab7965b267fea4457d798a91

SHA256
33c4b30d18fa3eeeed676831973cf8dd8c9a9145e7edcb689efeec0647d685d4

SHA512
4969ab6d2239a94d1dfb6105d9a329588ad0e3366ab4af874e033b853adfcadf808eced3466823136221e110accd2bcd5b25b0474b11947aab510f0b92d397d8

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

Filesize
434B

MD5
934a4b28b7f03262a9188f0b8b1ed326

SHA1
5e948647165f8834da7b1db699827ea59b9a36f1

SHA256
aa98c02bda8c89f876f9b4d4da724a6bdd6434a8e83655b3beb4bee227444b94

SHA512
f07b8ed15e64076c93b0d2b37d9c8027bc9b48c3521212abcf8a879aadb692439e0d641032c8fcc15a5f1730b1091224453756ee884e10c15aabb33347124ceb

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
95KB

MD5
8e617cbfd82e7d8b1e714f2b4f27d84f

SHA1
bcf77c9799fd933f23ce344d2c46081dec46ebb2

SHA256
75b0313a8289f2e8bef73aa7599d96e661b6d3840fb32d330bc3cd924240b69e

SHA512
3809686bd7d4c03cab6ce7e438115ecf224955fe55d2c8784e16d9df1d30c86b047017536435e059a9bda2e30a29263139336ebcab662d2a281f9c7dc2792d79

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
95KB

MD5
8e617cbfd82e7d8b1e714f2b4f27d84f

SHA1
bcf77c9799fd933f23ce344d2c46081dec46ebb2

SHA256
75b0313a8289f2e8bef73aa7599d96e661b6d3840fb32d330bc3cd924240b69e

SHA512
3809686bd7d4c03cab6ce7e438115ecf224955fe55d2c8784e16d9df1d30c86b047017536435e059a9bda2e30a29263139336ebcab662d2a281f9c7dc2792d79

Download Submit
memory/2176-136-0x000000006D100000-0x000000006D128000-memory.dmp

Filesize
160KB

Download
memory/2176-156-0x000000006D100000-0x000000006D128000-memory.dmp

Filesize
160KB

Download
memory/3304-157-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-159-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-152-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-153-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-154-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-155-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-161-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3304-160-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3304-158-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4124-145-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4124-140-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4124-141-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4124-137-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download