quasar | 86010be5c589a6d608627dc06c8878dd5c71d43852f5cb04a0b64dc49b61f927

General

Target
2026-10-24_3d208915b926955925e8481b21bcf989_cobalt-strike_icedid_satacom_stealc.exe
Size 3.3MB
Sample261026-aahawsay3t
SHA256 86010be5c589a6d608627dc06c8878dd5c71d43852f5cb04a0b64dc49b61f927
MD5 3d208915b926955925e8481b21bcf989
SHA1 599b62918d46b0c9a6d914deeda2cfccf520a0f6
SHA512 8c5b0960a74fe528d935c9d15e734a4f8fd253b493f3051823afca9b11277a13a1eb2045d4abc428780ef657efd8ea97b030a11ecc226cab6ebb75dc1a62e239
SSDEEP 49152:byJPZJrbdtcBvvlbIXBWKFRiEs0Anx5edDDTkL+rEeZXOltc/ky0w9teMWYA+0qK:WPZJPdtcicQD/accy0etZWY90qB
TLSH
T15BF5331BE70475F9E36B4876C9420A15BB337826437239EB47A44DBA1E267C05E7E323
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

test bastien discovery execution quasar persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Test Bastien

C2

6.tcp.eu.ngrok.io:20634

Mutex

1d47547d-7fe7-449e-8a45-2ca09acef3bf

Attributes

encryption_key
672B3EC87C4201552F0D20D3438DE1960017E654
install_name
svchot.exe
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
log_directory
Logs
reconnect_delay
10000
startup_key
OneSecret Client Startup
subdirectory
SubDir

Signatures

Family: Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000b000000024262-3.dat	family_quasar
behavioral1/memory/4256-4-0x00000000007A0000-0x0000000000AC4000-memory.dmp	family_quasar

Detects Windows executables referencing non-Windows User-Agents 2 IoCs

resource	yara_rule
behavioral1/files/0x000b000000024262-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/4256-4-0x00000000007A0000-0x0000000000AC4000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers 2 IoCs

resource	yara_rule
behavioral1/files/0x000b000000024262-3.dat	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/4256-4-0x00000000007A0000-0x0000000000AC4000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables containing common artifacts observed in infostealers 2 IoCs

resource	yara_rule
behavioral1/files/0x000b000000024262-3.dat	INDICATOR_SUSPICIOUS_GENInfoStealer
behavioral1/memory/4256-4-0x00000000007A0000-0x0000000000AC4000-memory.dmp	INDICATOR_SUSPICIOUS_GENInfoStealer

Executes dropped EXE 3 IoCs

pid	Process
4256	oneclient_runtime.exe
2384	svchot.exe
4156	svchot.exe

Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
10	6.tcp.eu.ngrok.io
34	6.tcp.eu.ngrok.io
45	6.tcp.eu.ngrok.io

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	svchot.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	svchot.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2920	schtasks.exe
1480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2152	2026-10-24_3d208915b926955925e8481b21bcf989_cobalt-strike_icedid_satacom_stealc.exe
2152	2026-10-24_3d208915b926955925e8481b21bcf989_cobalt-strike_icedid_satacom_stealc.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4256	oneclient_runtime.exe
Token: SeDebugPrivilege	2384	svchot.exe
Token: SeDebugPrivilege	4156	svchot.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2384	svchot.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 4256	2152	2026-10-24_3d208915b926955925e8481b21bcf989_cobalt-strike_icedid_satacom_stealc.exe	86
PID 4256 wrote to memory of 2920	4256	oneclient_runtime.exe	87
PID 4256 wrote to memory of 2384	4256	oneclient_runtime.exe	89
PID 2384 wrote to memory of 1480	2384	svchot.exe	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\2026-10-24_3d208915b926955925e8481b21bcf989_cobalt-strike_icedid_satacom_stealc.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-24_3d208915b926955925e8481b21bcf989_cobalt-strike_icedid_satacom_stealc.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Users\Admin\AppData\Local\Temp\oneclient_runtime.exe
  "C:\Users\Admin\AppData\Local\Temp\oneclient_runtime.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "OneSecret Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\svchot.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2920
- - C:\Users\Admin\AppData\Roaming\SubDir\svchot.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\svchot.exe"
    3⤵
    - Executes dropped EXE
    - Reads the TCP/IP host and domain name from the registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2384
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "OneSecret Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\svchot.exe" /rl HIGHEST /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1480

C:\Users\Admin\AppData\Roaming\SubDir\svchot.exe
C:\Users\Admin\AppData\Roaming\SubDir\svchot.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4156

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Network Configuration Discovery

1

T1016

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

oneclient_runtime.exe

Path C:\Users\Admin\AppData\Local\Temp\oneclient_runtime.exe
Size 3.1MB
SHA256 01118f4d2de8c056e6b0e28d790512e73e5877e07987c23b05a44c025dd7a744
MD5 847407ef93fed110696fce294738ca1a
SHA1 20241bc8e6eb84c93a182740be00860df1fa35f4
SHA512 75d7c2c257560154f843a358731476e5bf7742aa4a66957c98b3f0554b2cb7752a206b9d297f36e16214da2fb4ece9e539ccfb9d4505007a3ed7cd25e7c4a56a
SSDEEP 49152:wu1rmLw2Uw9NS4LQfxbNl2JHXkfRG/ik5x+oe5ogdFbTTHHB72eh2NT:wu4jUOI4LQfxbNl2JHXkfRGcos
TLSH
T1B8E56B143BF85E23D17FD27295B04422A3F2F82AF363EB5B5581637A1C53B614902BA7
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2384-12-0x0000000001770000-0x0000000001780000-memory.dmp

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memory/2384-16-0x000000001BA00000-0x000000001BA50000-memory.dmp

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memory/2384-17-0x000000001E560000-0x000000001E612000-memory.dmp

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memory/4256-4-0x00000000007A0000-0x0000000000AC4000-memory.dmp

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memory/4256-5-0x0000000001E10000-0x0000000001E20000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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