8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e

Analysis

max time kernel
149s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 14:33

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General

Target

8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
Size

134KB
MD5

f9084ae207fd883f37ac1b527290380d
SHA1

ae926055612709498ad0e782fedab37d16035b70
SHA256

8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e
SHA512

4d5a25c00ddd1b499c0e7cec8799c37f0c32a18a364e345478f97761daa5e34b42c3ad45dc9b01d84d19221679dde79776b710798e873b5178bec2d4f0cb00e5
SSDEEP

3072:aniXS4Rz+mbvUif3yRauPxshFUf8W9trM:znYLiuauPxsRYtY

Score

8^/10

persistence upx

Malware Config

Signatures

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"	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2120-132-0x0000000000DA0000-0x0000000000DC5000-memory.dmp	upx
behavioral2/files/0x000200000001e72a-134.dat	upx
behavioral2/files/0x000200000001e72a-135.dat	upx
behavioral2/memory/4192-137-0x0000000075090000-0x00000000750B5000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
4192	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\6DE60BDC.tmp	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2120	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
2120	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe

C:\Users\Admin\AppData\Local\Temp\8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
"C:\Users\Admin\AppData\Local\Temp\8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe"
1⤵
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:2120

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:4192

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:\Users\Infotmp.txt

Filesize
720B

MD5
464f8a9d0e9021495cd1b6dd187e599c

SHA1
e4bd77050f3b91d9ed063ff3da04897778f09fb8

SHA256
8c15e23b4501eb6c05c2074b7a72ddb803cf99a5ba46ded30d5e819d13b9f287

SHA512
0fb667a5ab7af2a829118748bb917f690fcbc8a4572735e00fa855f1fc6ccff7f2c98b73704adf5062e9724f6421cb9adf3cf0a72e97b9a3e572dd9ee1bf6df1

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

Filesize
134KB

MD5
65b720270d0a8bc16a70859343599472

SHA1
5547f094248e71d108b64b04415379bba30cf3b9

SHA256
de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

SHA512
0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

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

Filesize
134KB

MD5
65b720270d0a8bc16a70859343599472

SHA1
5547f094248e71d108b64b04415379bba30cf3b9

SHA256
de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

SHA512
0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

Download Submit
memory/2120-132-0x0000000000DA0000-0x0000000000DC5000-memory.dmp

Filesize
148KB

Download
memory/2120-133-0x0000000002E20000-0x0000000006E20000-memory.dmp

Filesize
64.0MB

Download
memory/4192-137-0x0000000075090000-0x00000000750B5000-memory.dmp

Filesize
148KB

Download