dc9d20cd3326273a57777cdcc31ee730988660b6eec9153647646e8cb9882829

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 07:37

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General

Target

Conficker binaries/jwgkvsq.dll
Size

161KB
MD5

c3852074ee50da92c2857d24471747d9
SHA1

7910076ec1e60326409408fc042c89e96aefefa1
SHA256

cfc5bef5b3a8bd21d5b9748832db14f6966154867c946564e003e0febf2b6c92
SHA512

409faf818f9c1ee034decf1ff7c4727b2bcfd5b45ed6e30a45c3d6b46e3c437fc9d26441df174fbeb585ca8ce0a0fcdc4222815b34d582b6d08eadeb652e3aa8
SSDEEP

3072:ycesbKsNNw3cMX6ybBlhRsjbGZjZ+mcqSrlv:ysNscwBlwbGFMmcdBv

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 31 IoCs

Processes:

explorer.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0 = 4c003100000000005558e67410204c6f63616c00380008000400efbe5558a7735558e6742a000000f80100000000020000000000000000000000000000004c006f00630061006c00000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 74003100000000005558a7731100557365727300600008000400efbeee3a851a5558a7732a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 52003100000000005558a773122041707044617461003c0008000400efbe5558a7735558a7732a000000350000000000030000000000000000000000000000004100700070004400610074006100000016000000	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4c003100000000005558ee79100041646d696e00380008000400efbe5558a7735558ee792a00000028000000000004000000000000000000000000000000410064006d0069006e00000014000000	explorer.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

rundll32.exe

pid	Process
2552	rundll32.exe
2552	rundll32.exe
2552	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

rundll32.exeExplorer.EXE

description	pid	Process
Token: SeDebugPrivilege	2552	rundll32.exe
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid	Process
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE
1204	Explorer.EXE

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Explorer.EXE

pid	Process
1204	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	Process	procid_target
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 1952 wrote to memory of 2552	1952	rundll32.exe	28
PID 2552 wrote to memory of 1204	2552	rundll32.exe	21
PID 2552 wrote to memory of 2508	2552	rundll32.exe	29
PID 2552 wrote to memory of 2508	2552	rundll32.exe	29
PID 2552 wrote to memory of 2508	2552	rundll32.exe	29
PID 2552 wrote to memory of 2508	2552	rundll32.exe	29

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1204
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Conficker binaries\jwgkvsq.dll",#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Conficker binaries\jwgkvsq.dll",#1
    3⤵
    - Modifies visibility of file extensions in Explorer
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2552
  - - C:\Windows\SysWOW64\explorer.exe
      explorer C:\Users\Admin\AppData\Local
      4⤵
      PID:2508

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:2648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1204-5-0x0000000002D20000-0x0000000002D21000-memory.dmp

Filesize
4KB

Download
memory/2552-2-0x0000000000690000-0x00000000006B2000-memory.dmp

Filesize
136KB

Download
memory/2552-3-0x0000000000690000-0x00000000006B2000-memory.dmp

Filesize
136KB

Download
memory/2552-8-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

Filesize
4KB

Download
memory/2552-7-0x000000007753F000-0x0000000077540000-memory.dmp

Filesize
4KB

Download
memory/2552-6-0x0000000000690000-0x00000000006B2000-memory.dmp

Filesize
136KB

Download
memory/2648-9-0x0000000003A90000-0x0000000003AA0000-memory.dmp

Filesize
64KB

Download