ramnit | 8ea63de97de9a923e56ae6510184867aa4c9ea3ca85069663ea1254a5df1e55d

Analysis

max time kernel
173s
max time network
199s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2022 02:06

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General

Target

8ea63de97de9a923e56ae6510184867aa4c9ea3ca85069663ea1254a5df1e55d.dll
Size

156KB
MD5

dc8e7187d0d667665dc3ea2d851ee7c0
SHA1

e6392ee620a70255cfbd52e54b570ef8dabb6e6e
SHA256

8ea63de97de9a923e56ae6510184867aa4c9ea3ca85069663ea1254a5df1e55d
SHA512

8fa62aad8a732f4fbc9ceb230c4ee474a08a4bdb289e9db6b3ab603328c75f062eccf653410c736aa441a49c0d0d24da03449deb8ea32155986f959006117a4e
SSDEEP

3072:An4cV8gf2u41Z5tKlw1vrplnv0M6rUk12VH+Q9bDYJ1it78P:a4y8gOl2Evrrvj/aIH+QlcJgOP

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
4196	rundll32mgr.exe
3864	WaterMark.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4196-140-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3864-144-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3864-146-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3864-150-0x0000000000400000-0x0000000000421000-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 created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxA807.tmp	rundll32mgr.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3700	3500	WerFault.exe	89
3128	3500	WerFault.exe	89

Modifies Internet Explorer settings 1 TTPs 41 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{84F158CD-762C-11ED-919F-7218A89707DE} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1813660881"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1813660881"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31001145"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31001145"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31001145"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1813660881"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1813660881"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1681005279"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1681005279"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{84EEF9B9-762C-11ED-919F-7218A89707DE} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31001145"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31001145"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31001145"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe
3864	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3864	WaterMark.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1128	iexplore.exe
4312	iexplore.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1128	iexplore.exe
1128	iexplore.exe
4312	iexplore.exe
4312	iexplore.exe
3756	IEXPLORE.EXE
3756	IEXPLORE.EXE
1848	IEXPLORE.EXE
1848	IEXPLORE.EXE
3756	IEXPLORE.EXE
3756	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 1120	2260	rundll32.exe	81
PID 2260 wrote to memory of 1120	2260	rundll32.exe	81
PID 2260 wrote to memory of 1120	2260	rundll32.exe	81
PID 1120 wrote to memory of 4196	1120	rundll32.exe	87
PID 1120 wrote to memory of 4196	1120	rundll32.exe	87
PID 1120 wrote to memory of 4196	1120	rundll32.exe	87
PID 4196 wrote to memory of 3864	4196	rundll32mgr.exe	88
PID 4196 wrote to memory of 3864	4196	rundll32mgr.exe	88
PID 4196 wrote to memory of 3864	4196	rundll32mgr.exe	88
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3864 wrote to memory of 3500	3864	WaterMark.exe	89
PID 3500 wrote to memory of 3700	3500	svchost.exe	92
PID 3500 wrote to memory of 3700	3500	svchost.exe	92
PID 3500 wrote to memory of 3700	3500	svchost.exe	92
PID 3864 wrote to memory of 1128	3864	WaterMark.exe	93
PID 3864 wrote to memory of 1128	3864	WaterMark.exe	93
PID 3864 wrote to memory of 4312	3864	WaterMark.exe	94
PID 3864 wrote to memory of 4312	3864	WaterMark.exe	94
PID 4312 wrote to memory of 1848	4312	iexplore.exe	97
PID 4312 wrote to memory of 1848	4312	iexplore.exe	97
PID 4312 wrote to memory of 1848	4312	iexplore.exe	97
PID 1128 wrote to memory of 3756	1128	iexplore.exe	96
PID 1128 wrote to memory of 3756	1128	iexplore.exe	96
PID 1128 wrote to memory of 3756	1128	iexplore.exe	96

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ea63de97de9a923e56ae6510184867aa4c9ea3ca85069663ea1254a5df1e55d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ea63de97de9a923e56ae6510184867aa4c9ea3ca85069663ea1254a5df1e55d.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:4196
  - - 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 WriteProcessMemory
      PID:3864
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3500
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 208
        6⤵
        Program crash
        
        PID:3700
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 208
        6⤵
        Program crash
        
        PID:3128
    - - 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:1128
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1128 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3756
    - - 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:4312
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4312 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3500 -ip 3500
1⤵
PID:1864

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
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{84EEF9B9-762C-11ED-919F-7218A89707DE}.dat

Filesize
5KB

MD5
274263c9cd0d16bbabd7366ebf35ab6c

SHA1
fd5bab45232f1dbdefd76a8d0311ac415afaa7fa

SHA256
4e4919df7a59f0d45485d1ec124d3bece056147ed06a4d00a3ae2cef023f75dc

SHA512
f6a827c3eb4b5a2840dd4c6ecc6011c6c22758af9412b16d68e6a3a84de8762c9f4b14d293469c2765d0e2883ad094f9032c1317f54cba70b4cbfbff4c613948

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{84F158CD-762C-11ED-919F-7218A89707DE}.dat

Filesize
5KB

MD5
a33b46d516c8cff7cd0270cd6dbcfe72

SHA1
938c38c86b802ad9b732d59cc96ffb0b836dc159

SHA256
c31f15a5c27e58731baca8f4dfc000658a56e187513d5cbc3a3a1e1cc1fecb83

SHA512
63e71d37633039dfe972e48a4d1f0e5727a22491c7aef57b9912acc4fd7dd06ad6327f40d5e88ac47e276493191a71d2f119ba9cf3d93e88e229ee5bfe9c498e

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

Download Submit
memory/1120-132-0x0000000000000000-mapping.dmp

Download
memory/1120-138-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/3500-143-0x0000000000000000-mapping.dmp

Download
memory/3700-147-0x0000000000000000-mapping.dmp

Download
memory/3864-145-0x0000000001EF0000-0x0000000001F11000-memory.dmp

Filesize
132KB

Download
memory/3864-144-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3864-146-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3864-136-0x0000000000000000-mapping.dmp

Download
memory/3864-150-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4196-140-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4196-141-0x0000000000580000-0x00000000005A1000-memory.dmp

Filesize
132KB

Download
memory/4196-133-0x0000000000000000-mapping.dmp

Download