quasar | 4fedeeefed00e0da1cc5919c6938c80a3c593f3e43e6e5132988d21244647daa

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 21:40

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General

Target
2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
Size 5.3MB
Sample240329-1jgntsbb77
SHA256 4fedeeefed00e0da1cc5919c6938c80a3c593f3e43e6e5132988d21244647daa
MD5 2d7204915a23edd253b292641b3662c0
SHA1 407c5790fc12a366a62c536709a33d36a2d1cc67
SHA512 9bcfe6fb3995a4880eaa5078e88bdea5238b8993090adc64336e45452868934bd20dd4af5a944d3a15d9033ec7085766cb82b99cc7226c57bc34358b84427624
SSDEEP 12288:htqqYxIs5v0reitVlfwE+9oqZMoEuPScxrWN:GPcrXt1uoqT1nxCN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

mdformo.ddns.net:4782
mdformo1.ddns.net:4782

Mutex

QSR_MUTEX_SacY3rTqMuWFLvKsGN

Attributes

encryption_key
CCn3UVxnewECsN8THLRy
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 payload 1 IoCs

resource	yara_rule
behavioral2/memory/4676-15-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rocketleau.lnk	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4676	svhost.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe
File opened for modification	C:\Windows\assembly	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 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	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3356	timeout.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\rocketleage\rocketleau:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
Token: SeRestorePrivilege	1036	dw20.exe
Token: SeBackupPrivilege	1036	dw20.exe
Token: SeBackupPrivilege	1036	dw20.exe
Token: SeBackupPrivilege	1036	dw20.exe
Token: SeBackupPrivilege	1036	dw20.exe
Token: SeManageVolumePrivilege	968	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 1352	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	110
PID 1116 wrote to memory of 1352	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	110
PID 1116 wrote to memory of 1352	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	110
PID 1352 wrote to memory of 1360	1352	cmd.exe	112
PID 1352 wrote to memory of 1360	1352	cmd.exe	112
PID 1352 wrote to memory of 1360	1352	cmd.exe	112
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 1116 wrote to memory of 4676	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	113
PID 4676 wrote to memory of 1036	4676	svhost.exe	114
PID 4676 wrote to memory of 1036	4676	svhost.exe	114
PID 4676 wrote to memory of 1036	4676	svhost.exe	114
PID 1116 wrote to memory of 4708	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	115
PID 1116 wrote to memory of 4708	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	115
PID 1116 wrote to memory of 4708	1116	2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe	115
PID 4708 wrote to memory of 3356	4708	cmd.exe	117
PID 4708 wrote to memory of 3356	4708	cmd.exe	117
PID 4708 wrote to memory of 3356	4708	cmd.exe	117

C:\Users\Admin\AppData\Local\Temp\2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2d7204915a23edd253b292641b3662c0_JaffaCakes118.exe"
1⤵
- Drops startup file
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - NTFS ADS
  - Suspicious use of WriteProcessMemory
  PID:1352
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\rocketleage\rocketleau.lnk" /f
    3⤵
    PID:1360
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4676
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 804
    3⤵
    - Drops file in Windows directory
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1036
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\rocketleage\rocketleau.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4708
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 300
    3⤵
    - Delays execution with timeout.exe
    PID:3356

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=3852 --field-trial-handle=2844,i,5640589924128028832,7963280732661142908,262144 --variations-seed-version /prefetch:8
1⤵
PID:4676

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:1104

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

rocketleau

Path C:\Users\Admin\AppData\Local\Temp\rocketleage\rocketleau
Size 5.3MB
SHA256 4fedeeefed00e0da1cc5919c6938c80a3c593f3e43e6e5132988d21244647daa
MD5 2d7204915a23edd253b292641b3662c0
SHA1 407c5790fc12a366a62c536709a33d36a2d1cc67
SHA512 9bcfe6fb3995a4880eaa5078e88bdea5238b8993090adc64336e45452868934bd20dd4af5a944d3a15d9033ec7085766cb82b99cc7226c57bc34358b84427624
SSDEEP 12288:htqqYxIs5v0reitVlfwE+9oqZMoEuPScxrWN:GPcrXt1uoqT1nxCN
MD5 SHA1 SHA512 SSDEEP

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rocketleau.bat

Path C:\Users\Admin\AppData\Local\Temp\rocketleage\rocketleau.bat
Size 210B
SHA256 7b24c30c80c92e603b58503f40becfc414c70ea3cb12d9609f39a12555d876fc
MD5 8cb06ecf83543bd343cbfa880a51b5c2
SHA1 61555fabbb2fe3549cfeb755482c301d925ecccd
SHA512 56729e4fbece72bd44bf9fc4174dc3b65545b546f20c396fb5ddae55c15a737017a93f94212512e7098b23edcca33541711a390fff2f9e9765eb36c587736312
MD5 SHA1 SHA512

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svhost.exe

Path C:\Users\Admin\AppData\Local\Temp\svhost.exe
Size 89KB
SHA256 331487446653875bf1e628b797a5283e40056654f7ff328eafbe39b0304480d3
MD5 84c42d0f2c1ae761bef884638bc1eacd
SHA1 4353881e7f4e9c7610f4e0489183b55bb58bb574
SHA512 43c307a38faa3a4b311597034cf75035a4434a1024d2a54e867e6a94b53b677898d71a858438d119000e872a7a6e92c5b31d277a8c207a94375ed4fd3c7beb87
SSDEEP 1536:H96ZJwk1oO+huJs4HN0Auo7G+DKSOanlgVO3GGLJ:IMFCHV1G+DKSOanlEud
MD5 SHA1 SHA512 SSDEEP

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memory/968-48-0x000001DFBAB60000-0x000001DFBAB70000-memory.dmp

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memory/968-68-0x000001DFC3010000-0x000001DFC3011000-memory.dmp

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memory/968-67-0x000001DFC2F00000-0x000001DFC2F01000-memory.dmp

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memory/968-66-0x000001DFC2F00000-0x000001DFC2F01000-memory.dmp

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memory/968-64-0x000001DFC2ED0000-0x000001DFC2ED1000-memory.dmp

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memory/968-32-0x000001DFBAA60000-0x000001DFBAA70000-memory.dmp

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memory/1116-0-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/1116-3-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/1116-2-0x0000000000FD0000-0x0000000000FE0000-memory.dmp

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memory/1116-4-0x0000000000FD0000-0x0000000000FE0000-memory.dmp

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memory/1116-1-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/1116-31-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/4676-20-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/4676-30-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/4676-22-0x00000000754E0000-0x0000000075A91000-memory.dmp

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memory/4676-21-0x0000000001AA0000-0x0000000001AB0000-memory.dmp

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memory/4676-15-0x0000000000400000-0x000000000045E000-memory.dmp

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