quasar | b37cf25cf1b1df68f13bba06d62439fde48b2b08156691baf36b1506a6242d0f

General

Target

ligma_menu.exe
Size

3.1MB
MD5

5d585eaddfaddd8dad1d752c0bbaa34a
SHA1

f42906d58c5a404cdc349b7a98c087c1e500b21b
SHA256

b37cf25cf1b1df68f13bba06d62439fde48b2b08156691baf36b1506a6242d0f
SHA512

31705030c280f617ad87087e0aa3079a661bcb74fa7d8f5d93dc3bae2239f1de5f7b2f48dd9f88051695a64673ee09a4d19a7705fe3d3942aa2d46668777bde2
SSDEEP

49152:mvyI22SsaNYfdPBldt698dBcjHdoSgYWboGZ4rTHHB72eh2NT:mvf22SsaNYfdPBldt6+dBcjHdoSgY0

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.184:4782

Mutex

3b3d8c23-815f-460c-a0d4-67d49cd2682d

Attributes

encryption_key
1758FB18D23634847927348E0CD6C3963ABFE0AB
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/memory/2004-1-0x0000000000970000-0x0000000000C94000-memory.dmp	family_quasar
behavioral1/files/0x0008000000023c94-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4448	Client.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.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
2192	schtasks.exe
4504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	ligma_menu.exe
Token: SeDebugPrivilege	4448	Client.exe
Token: SeDebugPrivilege	4416	taskmgr.exe
Token: SeSystemProfilePrivilege	4416	taskmgr.exe
Token: SeCreateGlobalPrivilege	4416	taskmgr.exe
Token: SeDebugPrivilege	444	ligma_menu.exe

Suspicious use of FindShellTrayWindow 40 IoCs

pid	Process
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe

Suspicious use of SendNotifyMessage 39 IoCs

pid	Process
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe
4416	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4448	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 2192	2004	ligma_menu.exe	83
PID 2004 wrote to memory of 2192	2004	ligma_menu.exe	83
PID 2004 wrote to memory of 4448	2004	ligma_menu.exe	85
PID 2004 wrote to memory of 4448	2004	ligma_menu.exe	85
PID 4448 wrote to memory of 4504	4448	Client.exe	86
PID 4448 wrote to memory of 4504	4448	Client.exe	86

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\ligma_menu.exe
"C:\Users\Admin\AppData\Local\Temp\ligma_menu.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2192
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4448
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4504

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4416

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2704

C:\Users\Admin\AppData\Local\Temp\ligma_menu.exe
"C:\Users\Admin\AppData\Local\Temp\ligma_menu.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:444

Network

MITRE ATT&CK Enterprise v15

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

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\ligma_menu.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
5d585eaddfaddd8dad1d752c0bbaa34a

SHA1
f42906d58c5a404cdc349b7a98c087c1e500b21b

SHA256
b37cf25cf1b1df68f13bba06d62439fde48b2b08156691baf36b1506a6242d0f

SHA512
31705030c280f617ad87087e0aa3079a661bcb74fa7d8f5d93dc3bae2239f1de5f7b2f48dd9f88051695a64673ee09a4d19a7705fe3d3942aa2d46668777bde2

Download Submit
memory/2004-0-0x00007FFD0BD53000-0x00007FFD0BD55000-memory.dmp

Filesize
8KB

Download
memory/2004-1-0x0000000000970000-0x0000000000C94000-memory.dmp

Filesize
3.1MB

Download
memory/2004-2-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/2004-9-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4416-29-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-28-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-23-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-24-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-26-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-17-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-18-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-19-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-25-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4416-27-0x00000256496F0000-0x00000256496F1000-memory.dmp

Filesize
4KB

Download
memory/4448-12-0x000000001B2B0000-0x000000001B300000-memory.dmp

Filesize
320KB

Download
memory/4448-11-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4448-15-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download
memory/4448-14-0x000000001C100000-0x000000001C628000-memory.dmp

Filesize
5.2MB

Download
memory/4448-13-0x000000001BA10000-0x000000001BAC2000-memory.dmp

Filesize
712KB

Download
memory/4448-10-0x00007FFD0BD50000-0x00007FFD0C811000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads