f7859184636bfb878b47bfd18feec613601db8c6345030c339fb03e6c5587b27

Analysis

max time kernel
133s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 09:33

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General

Target

f7859184636bfb878b47bfd18feec613601db8c6345030c339fb03e6c5587b27.dll
Size

111KB
MD5

128f3c747972c3b777db70e3b0f92c4f
SHA1

71bc0c55baae3a1000b81c8a73a7463e01b4d02f
SHA256

f7859184636bfb878b47bfd18feec613601db8c6345030c339fb03e6c5587b27
SHA512

eef49a53b88eb45d7a46cab1591a69a9efeba79b7e039a26c6d7a6118b82a931ee9290e2e4a0f8b7ea4357958c22b2f4746172479ef6c89bd5294f3d0732b0c8
SSDEEP

3072:N10UxxXKM7SmRSOEAHnt7oyYv7Z3X6Q3TM+5jldzla5Hs:N10UxxVdXWyYvVHRTM+7d45Hs

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0"	rundll32.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\U:	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 28 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 52003100000000000c55cb70122041707044617461003c0008000400efbe0c55cb700c55cb702a000000eb0100000000020000000000000000000000000000004100700070004400610074006100000016000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 74003100000000000c55cb701100557365727300600008000400efbeee3a851a0c55cb702a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4c003100000000000c55b87e100041646d696e00380008000400efbe0c55cb700c55b87e2a00000030000000000004000000000000000000000000000000410064006d0069006e00000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	rundll32.exe
Token: SeShutdownPrivilege	1412	Explorer.EXE
Token: SeShutdownPrivilege	1412	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1412	Explorer.EXE
1412	Explorer.EXE
1412	Explorer.EXE
1412	Explorer.EXE

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1412	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1944 wrote to memory of 1948	1944	rundll32.exe	27
PID 1948 wrote to memory of 1412	1948	rundll32.exe	14
PID 1948 wrote to memory of 968	1948	rundll32.exe	28
PID 1948 wrote to memory of 968	1948	rundll32.exe	28
PID 1948 wrote to memory of 968	1948	rundll32.exe	28
PID 1948 wrote to memory of 968	1948	rundll32.exe	28

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1412
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f7859184636bfb878b47bfd18feec613601db8c6345030c339fb03e6c5587b27.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1944
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\f7859184636bfb878b47bfd18feec613601db8c6345030c339fb03e6c5587b27.dll,#1
    3⤵
    - Modifies visibility of file extensions in Explorer
    - Enumerates connected drives
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1948
  - - C:\Windows\SysWOW64\explorer.exe
      explorer C:\Users\Admin\AppData
      4⤵
      PID:968

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:2004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/968-64-0x0000000074551000-0x0000000074553000-memory.dmp

Filesize
8KB

Download
memory/1948-55-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1948-59-0x00000000000B0000-0x00000000000D2000-memory.dmp

Filesize
136KB

Download
memory/1948-62-0x00000000000B0000-0x00000000000D2000-memory.dmp

Filesize
136KB

Download
memory/2004-65-0x000007FEFB751000-0x000007FEFB753000-memory.dmp

Filesize
8KB

Download
memory/2004-66-0x00000000039C0000-0x00000000039D0000-memory.dmp

Filesize
64KB

Download