8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e

Analysis

max time kernel
42s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-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 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00080000000126f1-55.dat	upx
behavioral1/memory/1228-56-0x00000000013E0000-0x0000000001405000-memory.dmp	upx
behavioral1/files/0x000b000000012330-60.dat	upx
behavioral1/files/0x000b000000012330-61.dat	upx
behavioral1/memory/948-65-0x0000000074610000-0x0000000074635000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1228	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
948	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\26E60504.tmp	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	8d658b22e7a86cc553773b91345274939e8a5049449415482628529137abb19e.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1228	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
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:1228

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:948

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
562762124b3f92985e9b97bc7a1cd03e

SHA1
613a0266732cd95861e859e2b9288ea0a77fb442

SHA256
f43f4a831c3d1ca8370b8bd5dc0dd5933548a96e1d3a089cb389557fbf80789d

SHA512
22250dd3c065e0963e8cccad61a5a34f7de62500a5cdbb11d66511d617de6f8b92cba87eefa1d42f7cfe3d1a2ce25ea6d7490540e9c71a79ffe08509d2782570

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

Filesize
134KB

MD5
65b720270d0a8bc16a70859343599472

SHA1
5547f094248e71d108b64b04415379bba30cf3b9

SHA256
de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

SHA512
0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

Download Submit
\Windows\SysWOW64\26E60504.tmp

Filesize
134KB

MD5
65b720270d0a8bc16a70859343599472

SHA1
5547f094248e71d108b64b04415379bba30cf3b9

SHA256
de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

SHA512
0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

Download Submit
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
134KB

MD5
65b720270d0a8bc16a70859343599472

SHA1
5547f094248e71d108b64b04415379bba30cf3b9

SHA256
de1db49994ec206581d4569e728f860b2f9aa333604d9b6e176079216be1ebc4

SHA512
0d808189d83befb46312af189501caa1264bae2718cf877ce4a1ab8bdcaa3672ceafb117a7f7332e826ce66643f1c1ac4e31030e63b9256f02f8164ea219b89f

Download Submit
memory/948-65-0x0000000074610000-0x0000000074635000-memory.dmp

Filesize
148KB

Download
memory/1228-54-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/1228-56-0x00000000013E0000-0x0000000001405000-memory.dmp

Filesize
148KB

Download
memory/1228-57-0x0000000002810000-0x0000000006810000-memory.dmp

Filesize
64.0MB

Download
memory/1228-58-0x0000000074A30000-0x0000000074A90000-memory.dmp

Filesize
384KB

Download
memory/1228-59-0x0000000074610000-0x0000000074635000-memory.dmp

Filesize
148KB

Download
memory/1228-64-0x0000000074A30000-0x0000000074A90000-memory.dmp

Filesize
384KB

Download