stealc | f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86

General

Target

f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe
Size

1.6MB
MD5

abab70683b8e44e8ba6bda544a8644f0
SHA1

9278cd5ce651e61ea88ddc39e9a6eefa854d8a24
SHA256

f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86
SHA512

01af958c43358fcb95951612d2265cb5680ad480c696dd0951d455b00e86e44e1a1ad6cdec16f58f78a207a4971c629b7ea8a5531810b65938006befa51cb9c8
SSDEEP

24576:T16dvdD4B0+lF0U2MZQti1u8LnsDJY6WpEYGYPORL4UjqmiIS5BxxK:T1Km2Or21tuuIeNHYGY0LzjsJxK

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 19 IoCs

stealer

resource	yara_rule
behavioral1/memory/1196-4-0x0000000004130000-0x0000000004243000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-7-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-11-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-15-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-16-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-17-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-30-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-31-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-32-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-33-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-34-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-51-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-52-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-68-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-69-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-86-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/3956-87-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3956	katB188.tmp

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1196 set thread context of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	katB188.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katB188.tmp

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp
3956	katB188.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95
PID 1196 wrote to memory of 3956	1196	f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe	95

C:\Users\Admin\AppData\Local\Temp\f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe
"C:\Users\Admin\AppData\Local\Temp\f61a6938815354d7f5df5fba81cb5626991a100a3275aab1eba37abd0aa12a86.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\katB188.tmp
  C:\Users\Admin\AppData\Local\Temp\katB188.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3956

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:888

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3224 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:3
1⤵
PID:3600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports

Filesize
2B

MD5
d751713988987e9331980363e24189ce

SHA1
97d170e1550eee4afc0af065b78cda302a97674c

SHA256
4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

SHA512
b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

Download Submit
C:\Users\Admin\AppData\Local\Temp\katB188.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1196-12-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/1196-1-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/1196-2-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/1196-3-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/1196-4-0x0000000004130000-0x0000000004243000-memory.dmp

Filesize
1.1MB

Download
memory/1196-0-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/3956-16-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-33-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-17-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-30-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-31-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-32-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-34-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-36-0x00000000077E0000-0x0000000007A3F000-memory.dmp

Filesize
2.4MB

Download
memory/3956-51-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-52-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-69-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-7-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-86-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/3956-87-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Analysis

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