ramnit | 939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19

General

Target

939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19.exe
Size

116KB
MD5

1afcada8be477e7a263b9193e0c551c0
SHA1

26a14e518efb4e47fe6bf039b2ca0b4e69c50575
SHA256

939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19
SHA512

76fc67dcf726b192355bcba26d66c5c1b2e6a0e9a2c68ff34f15050aaf4e68f8921732d573f83573fd8ba80c7ade26e21a958aba2180a576ea401e69737a7bd2
SSDEEP

1536:iituLYeZvGvscwXo6PJFkf04os42NuVt5aci7F+u22KErx0fFajyEh2iVkxv:iiQXcQo6PKtosTNuD5SFlbKE6Qa9p

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
2336	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe
204	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000023161-134.dat	upx
behavioral2/files/0x0006000000023161-135.dat	upx
behavioral2/files/0x000d00000002315c-139.dat	upx
behavioral2/memory/2336-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000d00000002315c-140.dat	upx
behavioral2/memory/204-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px81A8.tmp	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe

Modifies Internet Explorer settings 1 TTPs 25 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\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997918"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "503279327"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375795828"	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\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	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\Main	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\LastCheckForUpdateHighDateTime = "30997918"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	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
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\VersionManager	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
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\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "503279327"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{48FAEB78-6991-11ED-919F-66300FA194E6} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
204	DesktopLayer.exe
204	DesktopLayer.exe
204	DesktopLayer.exe
204	DesktopLayer.exe
204	DesktopLayer.exe
204	DesktopLayer.exe
204	DesktopLayer.exe
204	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
660	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
660	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
660	iexplore.exe
660	iexplore.exe
1496	IEXPLORE.EXE
1496	IEXPLORE.EXE
1496	IEXPLORE.EXE
1496	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 2336	4984	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19.exe	85
PID 4984 wrote to memory of 2336	4984	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19.exe	85
PID 4984 wrote to memory of 2336	4984	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19.exe	85
PID 2336 wrote to memory of 204	2336	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe	86
PID 2336 wrote to memory of 204	2336	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe	86
PID 2336 wrote to memory of 204	2336	939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe	86
PID 204 wrote to memory of 660	204	DesktopLayer.exe	87
PID 204 wrote to memory of 660	204	DesktopLayer.exe	87
PID 660 wrote to memory of 1496	660	iexplore.exe	88
PID 660 wrote to memory of 1496	660	iexplore.exe	88
PID 660 wrote to memory of 1496	660	iexplore.exe	88

C:\Users\Admin\AppData\Local\Temp\939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19.exe
"C:\Users\Admin\AppData\Local\Temp\939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Users\Admin\AppData\Local\Temp\939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe
  C:\Users\Admin\AppData\Local\Temp\939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2336
- - 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:204
  - - 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:660
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:660 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1496

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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\Local\Temp\939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\939b37e065a8363229a16f2c14d18959f0f83c272c25de57fe581df2cb46db19Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/204-136-0x0000000000000000-mapping.dmp

Download
memory/204-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2336-133-0x0000000000000000-mapping.dmp

Download
memory/2336-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4984-132-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4984-137-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing