1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb

Analysis

max time kernel
179s
max time network
214s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26/11/2022, 22:59

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General

Target

1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe
Size

499KB
MD5

4d9bfe9335af7c620e1fdc6a57a2417f
SHA1

a233274ecaa4ed9cb2cb0a7e5f2f0d1bb9cff093
SHA256

1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb
SHA512

93d2d456bfc978c196f6a29de682b02d276463dc139ceab9855c05b8dd2205f6d6844e21acc6cd9f3ca9bc6b7a59d78eb6b0d8aa81fc8cb779884a077972a800
SSDEEP

6144:QpiZV0gyN8X+VtBG/37c2aLQEM/8ER0u+GIIIIIIIhIIIIIIIIIIIIIIIUk:QpY0gyN8uDBGJ2QNvm5k

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1224	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	steamwebhelper.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\steamwebhelper = "C:\\Users\\Admin\\AppData\\Roaming\\steamwebhelper2\\steamwebhelper.exe"	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.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

pid	Process
1080	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe
1224	steamwebhelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe
Token: SeDebugPrivilege	1224	steamwebhelper.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 1224	1080	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe	86
PID 1080 wrote to memory of 1224	1080	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe	86
PID 1080 wrote to memory of 1224	1080	1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe	86

C:\Users\Admin\AppData\Local\Temp\1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe
"C:\Users\Admin\AppData\Local\Temp\1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080
- 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:1224

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

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Downloads

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

Filesize
499KB

MD5
4d9bfe9335af7c620e1fdc6a57a2417f

SHA1
a233274ecaa4ed9cb2cb0a7e5f2f0d1bb9cff093

SHA256
1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb

SHA512
93d2d456bfc978c196f6a29de682b02d276463dc139ceab9855c05b8dd2205f6d6844e21acc6cd9f3ca9bc6b7a59d78eb6b0d8aa81fc8cb779884a077972a800

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

Filesize
499KB

MD5
4d9bfe9335af7c620e1fdc6a57a2417f

SHA1
a233274ecaa4ed9cb2cb0a7e5f2f0d1bb9cff093

SHA256
1003bd98a8bd98815d1c57dc91c68e7f844901bbce8fa5dfb858fb488707a4bb

SHA512
93d2d456bfc978c196f6a29de682b02d276463dc139ceab9855c05b8dd2205f6d6844e21acc6cd9f3ca9bc6b7a59d78eb6b0d8aa81fc8cb779884a077972a800

Download Submit
memory/1080-132-0x0000000000420000-0x00000000004A2000-memory.dmp

Filesize
520KB

Download
memory/1080-133-0x0000000005910000-0x0000000005EB4000-memory.dmp

Filesize
5.6MB

Download
memory/1080-134-0x0000000005440000-0x00000000054D2000-memory.dmp

Filesize
584KB

Download
memory/1080-135-0x00000000055F0000-0x00000000055FA000-memory.dmp

Filesize
40KB

Download