quasar | eee98aabaf632f6d85b08f40401058696980c57a60bbf57ffae069e6ee1b827c

Analysis

max time kernel
142s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2025, 14:05

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General

Target

soft 1.14.exe
Size

2.6MB
MD5

0c8c53fc87610174bd8d304940ed84dd
SHA1

e049d2b70beec23414f252d3aab26f179e1573bc
SHA256

eee98aabaf632f6d85b08f40401058696980c57a60bbf57ffae069e6ee1b827c
SHA512

7150b0f65b6bb01d8be8d36a49c08239950384aa4382bda387b8de733f3f4f0db9eabf148e85b9b11efaf60761be703a6c28fdfdc6df87b03db6fb96acc4380e
SSDEEP

49152:b+PPOOZeF0a/ICoVrIdEXZe1pVhZ88hfOKx/13ZvTIqab7SNudXjdTF:HOk0axoVrIuXytKtKTrROJF

Score

10^/10

quasar bild discovery execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

bild

147.45.44.184:4782

Mutex

c3e182b5-304a-49a7-85b2-6d514cf6f590

Attributes

encryption_key
7248469493201CDB45E041FBAB664BCC303EC021
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 1 IoCs

resource	yara_rule
behavioral2/memory/4492-83-0x000000001BC90000-0x000000001BFB4000-memory.dmp	family_quasar

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	soft 1.14.tmp

Executes dropped EXE 2 IoCs

pid	Process
1540	soft 1.14.tmp
4284	soft 1.14.tmp

Loads dropped DLL 8 IoCs

pid	Process
1540	soft 1.14.tmp
1540	soft 1.14.tmp
4284	soft 1.14.tmp
4284	soft 1.14.tmp
1340	regsvr32.exe
4492	regsvr32.exe
3348	regsvr32.EXE
4452	regsvr32.EXE

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

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Run Powershell to execute payload.

execution

PowerShell

T1059.001

pid	Process
2864	powershell.exe
3076	powershell.exe
2440	powershell.exe
2596	powershell.exe
3076	powershell.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soft 1.14.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soft 1.14.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soft 1.14.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soft 1.14.tmp

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
4284	soft 1.14.tmp
4284	soft 1.14.tmp
4492	regsvr32.exe
4492	regsvr32.exe
2864	powershell.exe
2864	powershell.exe
3076	powershell.exe
3076	powershell.exe
4492	regsvr32.exe
4492	regsvr32.exe
3348	regsvr32.EXE
3348	regsvr32.EXE
2440	powershell.exe
2440	powershell.exe
3348	regsvr32.EXE
3348	regsvr32.EXE
4452	regsvr32.EXE
4452	regsvr32.EXE
2596	powershell.exe
2596	powershell.exe
4452	regsvr32.EXE
4452	regsvr32.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeIncreaseQuotaPrivilege	2864	powershell.exe
Token: SeSecurityPrivilege	2864	powershell.exe
Token: SeTakeOwnershipPrivilege	2864	powershell.exe
Token: SeLoadDriverPrivilege	2864	powershell.exe
Token: SeSystemProfilePrivilege	2864	powershell.exe
Token: SeSystemtimePrivilege	2864	powershell.exe
Token: SeProfSingleProcessPrivilege	2864	powershell.exe
Token: SeIncBasePriorityPrivilege	2864	powershell.exe
Token: SeCreatePagefilePrivilege	2864	powershell.exe
Token: SeBackupPrivilege	2864	powershell.exe
Token: SeRestorePrivilege	2864	powershell.exe
Token: SeShutdownPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeSystemEnvironmentPrivilege	2864	powershell.exe
Token: SeRemoteShutdownPrivilege	2864	powershell.exe
Token: SeUndockPrivilege	2864	powershell.exe
Token: SeManageVolumePrivilege	2864	powershell.exe
Token: 33	2864	powershell.exe
Token: 34	2864	powershell.exe
Token: 35	2864	powershell.exe
Token: 36	2864	powershell.exe
Token: SeDebugPrivilege	3076	powershell.exe
Token: SeIncreaseQuotaPrivilege	3076	powershell.exe
Token: SeSecurityPrivilege	3076	powershell.exe
Token: SeTakeOwnershipPrivilege	3076	powershell.exe
Token: SeLoadDriverPrivilege	3076	powershell.exe
Token: SeSystemProfilePrivilege	3076	powershell.exe
Token: SeSystemtimePrivilege	3076	powershell.exe
Token: SeProfSingleProcessPrivilege	3076	powershell.exe
Token: SeIncBasePriorityPrivilege	3076	powershell.exe
Token: SeCreatePagefilePrivilege	3076	powershell.exe
Token: SeBackupPrivilege	3076	powershell.exe
Token: SeRestorePrivilege	3076	powershell.exe
Token: SeShutdownPrivilege	3076	powershell.exe
Token: SeDebugPrivilege	3076	powershell.exe
Token: SeSystemEnvironmentPrivilege	3076	powershell.exe
Token: SeRemoteShutdownPrivilege	3076	powershell.exe
Token: SeUndockPrivilege	3076	powershell.exe
Token: SeManageVolumePrivilege	3076	powershell.exe
Token: 33	3076	powershell.exe
Token: 34	3076	powershell.exe
Token: 35	3076	powershell.exe
Token: 36	3076	powershell.exe
Token: SeIncreaseQuotaPrivilege	3076	powershell.exe
Token: SeSecurityPrivilege	3076	powershell.exe
Token: SeTakeOwnershipPrivilege	3076	powershell.exe
Token: SeLoadDriverPrivilege	3076	powershell.exe
Token: SeSystemProfilePrivilege	3076	powershell.exe
Token: SeSystemtimePrivilege	3076	powershell.exe
Token: SeProfSingleProcessPrivilege	3076	powershell.exe
Token: SeIncBasePriorityPrivilege	3076	powershell.exe
Token: SeCreatePagefilePrivilege	3076	powershell.exe
Token: SeBackupPrivilege	3076	powershell.exe
Token: SeRestorePrivilege	3076	powershell.exe
Token: SeShutdownPrivilege	3076	powershell.exe
Token: SeDebugPrivilege	3076	powershell.exe
Token: SeSystemEnvironmentPrivilege	3076	powershell.exe
Token: SeRemoteShutdownPrivilege	3076	powershell.exe
Token: SeUndockPrivilege	3076	powershell.exe
Token: SeManageVolumePrivilege	3076	powershell.exe
Token: 33	3076	powershell.exe
Token: 34	3076	powershell.exe
Token: 35	3076	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4284	soft 1.14.tmp

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 1540	1684	soft 1.14.exe	83
PID 1684 wrote to memory of 1540	1684	soft 1.14.exe	83
PID 1684 wrote to memory of 1540	1684	soft 1.14.exe	83
PID 1540 wrote to memory of 3348	1540	soft 1.14.tmp	84
PID 1540 wrote to memory of 3348	1540	soft 1.14.tmp	84
PID 1540 wrote to memory of 3348	1540	soft 1.14.tmp	84
PID 3348 wrote to memory of 4284	3348	soft 1.14.exe	85
PID 3348 wrote to memory of 4284	3348	soft 1.14.exe	85
PID 3348 wrote to memory of 4284	3348	soft 1.14.exe	85
PID 4284 wrote to memory of 1340	4284	soft 1.14.tmp	86
PID 4284 wrote to memory of 1340	4284	soft 1.14.tmp	86
PID 4284 wrote to memory of 1340	4284	soft 1.14.tmp	86
PID 1340 wrote to memory of 4492	1340	regsvr32.exe	87
PID 1340 wrote to memory of 4492	1340	regsvr32.exe	87
PID 4492 wrote to memory of 2864	4492	regsvr32.exe	88
PID 4492 wrote to memory of 2864	4492	regsvr32.exe	88
PID 4492 wrote to memory of 3076	4492	regsvr32.exe	91
PID 4492 wrote to memory of 3076	4492	regsvr32.exe	91
PID 3348 wrote to memory of 2440	3348	regsvr32.EXE	109
PID 3348 wrote to memory of 2440	3348	regsvr32.EXE	109
PID 4452 wrote to memory of 2596	4452	regsvr32.EXE	113
PID 4452 wrote to memory of 2596	4452	regsvr32.EXE	113

C:\Users\Admin\AppData\Local\Temp\soft 1.14.exe
"C:\Users\Admin\AppData\Local\Temp\soft 1.14.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\is-PEFVM.tmp\soft 1.14.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-PEFVM.tmp\soft 1.14.tmp" /SL5="$801E6,2280623,161792,C:\Users\Admin\AppData\Local\Temp\soft 1.14.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Users\Admin\AppData\Local\Temp\soft 1.14.exe
    "C:\Users\Admin\AppData\Local\Temp\soft 1.14.exe" /VERYSILENT
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3348
  - - C:\Users\Admin\AppData\Local\Temp\is-JJH4L.tmp\soft 1.14.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-JJH4L.tmp\soft 1.14.tmp" /SL5="$901E6,2280623,161792,C:\Users\Admin\AppData\Local\Temp\soft 1.14.exe" /VERYSILENT
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of FindShellTrayWindow
      Suspicious use of WriteProcessMemory
      PID:4284
    - - C:\Windows\SysWOW64\regsvr32.exe
        
        "regsvr32.exe" /s /i:SYNC "C:\Users\Admin\AppData\Roaming\\1iphlpapi.drv"
        5⤵
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1340
      - C:\Windows\system32\regsvr32.exe
        
        /s /i:SYNC "C:\Users\Admin\AppData\Roaming\\1iphlpapi.drv"
        6⤵
        Loads dropped DLL
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:4492
        
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:SYNC C:\Users\Admin\AppData\Roaming\1iphlpapi.drv' }) { exit 0 } else { exit 1 }"
        7⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2864
        
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" "Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute \"regsvr32\" -Argument \"/S /i:SYNC C:\Users\Admin\AppData\Roaming\1iphlpapi.drv\") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes 1)) -TaskName 'MicrosoftEdgeUpdateTaskMachineUA{43085EA2-EA6E-4747-A0F5-11B5F448E0F2}' -Description 'MicrosoftEdgeUpdateTaskMachineUA' -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -ExecutionTimeLimit 0) -RunLevel Highest"
        7⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3076

C:\Windows\system32\regsvr32.EXE
C:\Windows\system32\regsvr32.EXE /S /i:SYNC C:\Users\Admin\AppData\Roaming\1iphlpapi.drv
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:SYNC C:\Users\Admin\AppData\Roaming\1iphlpapi.drv' }) { exit 0 } else { exit 1 }"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2440

C:\Windows\system32\regsvr32.EXE
C:\Windows\system32\regsvr32.EXE /S /i:SYNC C:\Users\Admin\AppData\Roaming\1iphlpapi.drv
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4452
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:SYNC C:\Users\Admin\AppData\Roaming\1iphlpapi.drv' }) { exit 0 } else { exit 1 }"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
661739d384d9dfd807a089721202900b

SHA1
5b2c5d6a7122b4ce849dc98e79a7713038feac55

SHA256
70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

SHA512
81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
2ac3c9ba89b8c2ef19c601ecebb82157

SHA1
a239a4b11438c00e5ff89ebd4a804ede6a01935b

SHA256
3c2714ce07f8c04b3f8222dfe50d8ae08f548b0e6e79fe33d08bf6f4c2e5143e

SHA512
b1221d29e747b37071761b2509e9109b522cce6411f73f27c9428ac332d26b9f413ae6b8c0aeac1afb7fab2d0b3b1c4af189da12fe506287596df2ef8f083432

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
fa4503496ae0b44763bf00ef408de48f

SHA1
f723db7d07a8801fc280e68e4dd36f9ca46a80d1

SHA256
ca563ca6da047d137ff579f11b4672b20370568f143427ce82281ae02adb390e

SHA512
43977ab781bbb2672db785927c88e4a76bbc888eefe4bdaeb9339bb622d4902320a6fc2b778081623f1ab1d3e1b54beb87d90c9ffbe3f6ea5abae9d9759a80fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
71c4b1323b5c2b0b3dce79a418170c57

SHA1
f2484755165cc812bd2017c3ff93d7aef8e9f642

SHA256
b7151a59702581451ad3accb25d5aa7889a4d385142568331f42b0fcc2019872

SHA512
9048311d8ca08c33c090038fce1b5f28d22e1b9b0c1a6bb27f97619c778e2d474a3f10ab92c76bd487b94e059b5d066d1d960eec15b6a3a74355099494172e51

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ep1umsm5.d0j.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-P4CP9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PEFVM.tmp\soft 1.14.tmp

Filesize
1.1MB

MD5
bcc236a3921e1388596a42b05686ff5e

SHA1
43bffbbac6a1bf5f1fa21e971e06e6f1d0af9263

SHA256
43a656bcd060e8a36502ca2deb878d56a99078f13d3e57dcd73a87128588c9e9

SHA512
e3baaf1a8f4eb0e1ab57a1fb35bc7ded476606b65fafb09835d34705d8c661819c3cfa0ecc43c5a0d0085fd570df581438de27944e054e12c09a6933bbf5ce04

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QH7MB.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
C:\Users\Admin\AppData\Roaming\1iphlpapi.drv

Filesize
4.2MB

MD5
0eb9dd8cd99ba5cda1580cedd1337c47

SHA1
47d50257261756ee304375fa84531cde9f1b2d80

SHA256
744ef584ca4ac58a3ee825f5ead1129753d6d44198b3b14a53e368b7d24e84ef

SHA512
2e7c3cc9cdbca9776b1e4ffa004a761d40629e4e5c5626df73367e1f41f7c560d3ae496a0ea211db497d7437855e9686205fb32220e23fab30f8b489d232e25a

Download Submit
memory/1540-25-0x0000000000400000-0x000000000052D000-memory.dmp

Filesize
1.2MB

Download
memory/1540-7-0x0000000000400000-0x000000000052D000-memory.dmp

Filesize
1.2MB

Download
memory/1684-27-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1684-2-0x0000000000401000-0x0000000000417000-memory.dmp

Filesize
88KB

Download
memory/1684-0-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2864-57-0x000001C52B5B0000-0x000001C52B5D2000-memory.dmp

Filesize
136KB

Download
memory/3348-53-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3348-23-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3348-104-0x00007FFE2DBD0000-0x00007FFE2DFEC000-memory.dmp

Filesize
4.1MB

Download
memory/3348-21-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4284-51-0x0000000000400000-0x000000000052D000-memory.dmp

Filesize
1.2MB

Download
memory/4284-36-0x0000000000400000-0x000000000052D000-memory.dmp

Filesize
1.2MB

Download
memory/4452-123-0x00007FFE2DBD0000-0x00007FFE2DFEC000-memory.dmp

Filesize
4.1MB

Download
memory/4492-83-0x000000001BC90000-0x000000001BFB4000-memory.dmp

Filesize
3.1MB

Download
memory/4492-84-0x000000001CA30000-0x000000001CA80000-memory.dmp

Filesize
320KB

Download
memory/4492-85-0x000000001CB40000-0x000000001CBF2000-memory.dmp

Filesize
712KB

Download
memory/4492-86-0x00007FFE2DBD0000-0x00007FFE2DFEC000-memory.dmp

Filesize
4.1MB

Download