ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af

Analysis

max time kernel
187s
max time network
197s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 13:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe
Size

195KB
MD5

7bbec57cf98fcb917ffe80d2de6c1c19
SHA1

901c9e69a6da069a32a1f2f467d9cd5610ac7142
SHA256

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af
SHA512

ed5d65e5279565c177f3f49327916482d00f55c6ea0fe4d589cfc1ec31eddb2c673dc976c38e0520f991d79f25f167bc7a18d435c8c874d537ab6a780ec4d2eb
SSDEEP

6144:HDHyVG/j8MmXN6DV5sPYOI+oZCSaRpJ/miF:jSs/AMmXoD3uYOImSaRHuiF

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

steamwebhelper.exe

pid process

1172 steamwebhelper.exe

pid	process
1172	steamwebhelper.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exesteamwebhelper.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	steamwebhelper.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exesteamwebhelper.exe

pid process

4636 ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe
1172 steamwebhelper.exe

pid	process
4636	ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe
1172	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exesteamwebhelper.exe

description	pid	process
Token: SeDebugPrivilege	4636	ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe
Token: SeDebugPrivilege	1172	steamwebhelper.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe

description	pid	process	target process
PID 4636 wrote to memory of 1172	4636	ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe	steamwebhelper.exe
PID 4636 wrote to memory of 1172	4636	ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe	steamwebhelper.exe

C:\Users\Admin\AppData\Local\Temp\ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe
"C:\Users\Admin\AppData\Local\Temp\ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4636

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe
"C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1172

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe

Filesize
195KB

MD5
7bbec57cf98fcb917ffe80d2de6c1c19

SHA1
901c9e69a6da069a32a1f2f467d9cd5610ac7142

SHA256
ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af

SHA512
ed5d65e5279565c177f3f49327916482d00f55c6ea0fe4d589cfc1ec31eddb2c673dc976c38e0520f991d79f25f167bc7a18d435c8c874d537ab6a780ec4d2eb

Download Submit
C:\Users\Admin\AppData\Roaming\steamwebhelper2\steamwebhelper.exe

Filesize
195KB

MD5
7bbec57cf98fcb917ffe80d2de6c1c19

SHA1
901c9e69a6da069a32a1f2f467d9cd5610ac7142

SHA256
ad9a87e05f2af8be3be9f3922ec82714cc5fab527b4c8fde1a1d4cd628c9b2af

SHA512
ed5d65e5279565c177f3f49327916482d00f55c6ea0fe4d589cfc1ec31eddb2c673dc976c38e0520f991d79f25f167bc7a18d435c8c874d537ab6a780ec4d2eb

Download Submit
memory/1172-137-0x0000000000000000-mapping.dmp

Download
memory/1172-141-0x00007FFFF21B0000-0x00007FFFF2C71000-memory.dmp

Filesize
10.8MB

Download
memory/1172-142-0x00007FFFF21B0000-0x00007FFFF2C71000-memory.dmp

Filesize
10.8MB

Download
memory/4636-135-0x0000000000D30000-0x0000000000D66000-memory.dmp

Filesize
216KB

Download
memory/4636-136-0x00007FFFF21B0000-0x00007FFFF2C71000-memory.dmp

Filesize
10.8MB

Download
memory/4636-140-0x00007FFFF21B0000-0x00007FFFF2C71000-memory.dmp

Filesize
10.8MB

Download