3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765

Analysis

max time kernel
97s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
21-10-2022 00:06

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General

Target

3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe
Size

424KB
MD5

41a86b1e105e8d11741ed2ed29266f00
SHA1

131d8b0a2a04e939a8f47c835f33607fae09080d
SHA256

3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765
SHA512

47702a0e1b98daaa1597212e67246dfa05a9261bf760ff4552549686a9f2e9e8d63d87ebe322103995d2afc89834897ddfc909ea16e9bb731c0aec3c981ee5a3
SSDEEP

6144:Do4KwOoHTxF/p/uwONct43D92UqyTM5nSOEt5zpaiRhcuGE07v6+uMHWzIH:Do3qx9pGHNu4B2UzQ3wNxRhTKj6oHZ

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0009000000022de4-135.dat	aspack_v212_v242
behavioral2/files/0x0009000000022de4-134.dat	aspack_v212_v242
behavioral2/files/0x0007000000022e11-142.dat	aspack_v212_v242
behavioral2/files/0x0007000000022e11-143.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4236	37143a71.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	37143a71.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000022de4-135.dat	upx
behavioral2/files/0x0009000000022de4-134.dat	upx
behavioral2/memory/4236-136-0x0000000000CF0000-0x0000000000D37000-memory.dmp	upx
behavioral2/memory/4236-137-0x0000000000CF0000-0x0000000000D37000-memory.dmp	upx
behavioral2/memory/4236-138-0x0000000000CF0000-0x0000000000D37000-memory.dmp	upx
behavioral2/files/0x0007000000022e11-142.dat	upx
behavioral2/memory/4952-144-0x00000000752C0000-0x0000000075307000-memory.dmp	upx
behavioral2/files/0x0007000000022e11-143.dat	upx
behavioral2/memory/4952-145-0x00000000752C0000-0x0000000075307000-memory.dmp	upx
behavioral2/memory/4952-147-0x00000000752C0000-0x0000000075307000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
4952	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\218F0178.tmp	37143a71.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	37143a71.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4236	37143a71.exe
4236	37143a71.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe
1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 4236	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	73
PID 1996 wrote to memory of 4236	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	73
PID 1996 wrote to memory of 4236	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	73
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40
PID 1996 wrote to memory of 376	1996	3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe	40

C:\Users\Admin\AppData\Local\Temp\3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe
"C:\Users\Admin\AppData\Local\Temp\3a00314d84b530e777d210ae6c9fa5b2a00cc6bcad705147cb2895446181f765.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996
- C:\37143a71.exe
  C:\37143a71.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:4236

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:376

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:4952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

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:\37143a71.exe

Filesize
221KB

MD5
b3d1699bac5f4682cda6ca7676f8d333

SHA1
009fae507bc8b45b2a6e4f6e3753f60c96d3d692

SHA256
62e55bf4c88ceb6ca6ac53a2b3be0144c8939b4d576676f00182ef8bd5117218

SHA512
1a22e86d20b3f0cdae51bdef481caf3c83d1c5650c8566efef0bee941b5c4ddaf9d73d60b615de381c7d2e68a96cb118112898afb111ac41b68380a8ecffd571

Download Submit
C:\37143a71.exe

Filesize
221KB

MD5
b3d1699bac5f4682cda6ca7676f8d333

SHA1
009fae507bc8b45b2a6e4f6e3753f60c96d3d692

SHA256
62e55bf4c88ceb6ca6ac53a2b3be0144c8939b4d576676f00182ef8bd5117218

SHA512
1a22e86d20b3f0cdae51bdef481caf3c83d1c5650c8566efef0bee941b5c4ddaf9d73d60b615de381c7d2e68a96cb118112898afb111ac41b68380a8ecffd571

Download Submit
C:\Users\Infotmp.txt

Filesize
724B

MD5
4a87347441e1bb7330e52fb86ef0bee2

SHA1
14f8bb31ea4e1e846c530738a7f72d5a83862e0b

SHA256
d6efd7c2c4b616197fece41e3e0f2fc81a5eee83bc0454d247550682d32594c5

SHA512
282c1e3b2bc72e7fd2ccf5b1b40eb3cab35b6a1a32b17e924c52c91ef102699959a57a67e892b24997cf2bba5aff0652038928a09b497f92e991947a72ef2225

Download Submit
C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
221KB

MD5
0669d63a75b1858b346fc2e650ab3e48

SHA1
52529e1ebebdd2d3c447f6044f64639e517d9ef4

SHA256
e74d7fd196f966eb88d82c5396181e0c7e159080a173bc69d207ee3a24d4728e

SHA512
af0d747f01a91a09f21e4b68258f6f285fd502f2b021dc25574a343a20f3a1abd0b1a86129385a4d9eada81808ea32ed9718c606ad002721a1b96b31c38a39c8

Download Submit
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll

Filesize
221KB

MD5
0669d63a75b1858b346fc2e650ab3e48

SHA1
52529e1ebebdd2d3c447f6044f64639e517d9ef4

SHA256
e74d7fd196f966eb88d82c5396181e0c7e159080a173bc69d207ee3a24d4728e

SHA512
af0d747f01a91a09f21e4b68258f6f285fd502f2b021dc25574a343a20f3a1abd0b1a86129385a4d9eada81808ea32ed9718c606ad002721a1b96b31c38a39c8

Download Submit
memory/1996-140-0x0000000000100000-0x000000000016D000-memory.dmp

Filesize
436KB

Download
memory/1996-132-0x0000000000100000-0x000000000016D000-memory.dmp

Filesize
436KB

Download
memory/1996-148-0x0000000000100000-0x000000000016D000-memory.dmp

Filesize
436KB

Download
memory/4236-138-0x0000000000CF0000-0x0000000000D37000-memory.dmp

Filesize
284KB

Download
memory/4236-139-0x0000000002950000-0x0000000006950000-memory.dmp

Filesize
64.0MB

Download
memory/4236-141-0x0000000002950000-0x0000000006950000-memory.dmp

Filesize
64.0MB

Download
memory/4236-137-0x0000000000CF0000-0x0000000000D37000-memory.dmp

Filesize
284KB

Download
memory/4236-136-0x0000000000CF0000-0x0000000000D37000-memory.dmp

Filesize
284KB

Download
memory/4952-144-0x00000000752C0000-0x0000000075307000-memory.dmp

Filesize
284KB

Download
memory/4952-145-0x00000000752C0000-0x0000000075307000-memory.dmp

Filesize
284KB

Download
memory/4952-147-0x00000000752C0000-0x0000000075307000-memory.dmp

Filesize
284KB

Download