ramnit | d98a9c5b667e9c79c4a746dc756a6b3315ee98fe10737374cb7aa00b7e8741c7

General

Target

d98a9c5b667e9c79c4a746dc756a6b3315ee98fe10737374cb7aa00b7e8741c7.dll
Size

328KB
MD5

cbc0fd4946d7bd2ec025906f439a685d
SHA1

37eb873ede6adb0cb09351fa731b807bf86cad4b
SHA256

d98a9c5b667e9c79c4a746dc756a6b3315ee98fe10737374cb7aa00b7e8741c7
SHA512

07321cba9fb1c7c6362a2753bf68789c68075c984d5ff42c808229f3a8c68b0f6b644426d539e1c294126f3f225e405d4e357098c2deeb4dfebda2ef41412c5b
SSDEEP

6144:KOuDz+ZOf9ApGvxMa6e93kEi6LyHbGXQbNbcmG6Qn:KOuag9ApGvxtneEXFkbcv6

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
4892	regsvr32Srv.exe
1340	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000300000001e64b-135.dat	upx
behavioral2/files/0x000300000001e64b-136.dat	upx
behavioral2/memory/4892-139-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000400000001e64d-140.dat	upx
behavioral2/files/0x000400000001e64d-138.dat	upx
behavioral2/memory/1340-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32Srv.exe	regsvr32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px99A5.tmp	regsvr32Srv.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{1F3BB486-7806-11ED-B696-F6A3911CAFFB} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4093630473"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31001618"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31001618"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377385308"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4093630473"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1340	DesktopLayer.exe
1340	DesktopLayer.exe
1340	DesktopLayer.exe
1340	DesktopLayer.exe
1340	DesktopLayer.exe
1340	DesktopLayer.exe
1340	DesktopLayer.exe
1340	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4552	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4552	iexplore.exe
4552	iexplore.exe
2056	IEXPLORE.EXE
2056	IEXPLORE.EXE
2056	IEXPLORE.EXE
2056	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 448 wrote to memory of 644	448	regsvr32.exe	81
PID 448 wrote to memory of 644	448	regsvr32.exe	81
PID 448 wrote to memory of 644	448	regsvr32.exe	81
PID 644 wrote to memory of 4892	644	regsvr32.exe	82
PID 644 wrote to memory of 4892	644	regsvr32.exe	82
PID 644 wrote to memory of 4892	644	regsvr32.exe	82
PID 4892 wrote to memory of 1340	4892	regsvr32Srv.exe	83
PID 4892 wrote to memory of 1340	4892	regsvr32Srv.exe	83
PID 4892 wrote to memory of 1340	4892	regsvr32Srv.exe	83
PID 1340 wrote to memory of 4552	1340	DesktopLayer.exe	84
PID 1340 wrote to memory of 4552	1340	DesktopLayer.exe	84
PID 4552 wrote to memory of 2056	4552	iexplore.exe	85
PID 4552 wrote to memory of 2056	4552	iexplore.exe	85
PID 4552 wrote to memory of 2056	4552	iexplore.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\d98a9c5b667e9c79c4a746dc756a6b3315ee98fe10737374cb7aa00b7e8741c7.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:448
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\d98a9c5b667e9c79c4a746dc756a6b3315ee98fe10737374cb7aa00b7e8741c7.dll
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:644
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:4892
  - - 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:1340
    - - 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:4552
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4552 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2056

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

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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:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/644-133-0x0000000010000000-0x0000000010053000-memory.dmp

Filesize
332KB

Download
memory/1340-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4892-139-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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