b4589e3b06efe598a5c57d2a93ef9101d91a7be465a7d5aecb2e68b8ed1d0ae7

General

Target

sex.exe
Size

1.1MB
MD5

adafab2dac5b7c82b724ee21ef9b9074
SHA1

79705ff60099779427009651fdb9a86e305dff20
SHA256

b4589e3b06efe598a5c57d2a93ef9101d91a7be465a7d5aecb2e68b8ed1d0ae7
SHA512

ec030ba61181ec09a974a1dd41ba5a1b713f157c43dcd2cae44dd78c5fd401afaceddfafb7c88e123d476fc09f3550696b3367083285a58fba5e7ae3116ccb48
SSDEEP

24576:lImw98okVgela0as5CqLVO7XJCjkD3N0HRA:7L5ljasaU

Score

9^/10

defense_evasion discovery evasion execution impact ransomware

Malware Config

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2640	bcdedit.exe
1848	bcdedit.exe

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	sex.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	P1kAlMiG2Kb7.scr

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Z:	P1kAlMiG2Kb7.scr

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4908	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 1 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	P1kAlMiG2Kb7.scr

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2356	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3268	P1kAlMiG2Kb7.scr
3268	P1kAlMiG2Kb7.scr

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	3268	P1kAlMiG2Kb7.scr
Token: SeIncreaseQuotaPrivilege	488	WMIC.exe
Token: SeSecurityPrivilege	488	WMIC.exe
Token: SeTakeOwnershipPrivilege	488	WMIC.exe
Token: SeLoadDriverPrivilege	488	WMIC.exe
Token: SeSystemProfilePrivilege	488	WMIC.exe
Token: SeSystemtimePrivilege	488	WMIC.exe
Token: SeProfSingleProcessPrivilege	488	WMIC.exe
Token: SeIncBasePriorityPrivilege	488	WMIC.exe
Token: SeCreatePagefilePrivilege	488	WMIC.exe
Token: SeBackupPrivilege	488	WMIC.exe
Token: SeRestorePrivilege	488	WMIC.exe
Token: SeShutdownPrivilege	488	WMIC.exe
Token: SeDebugPrivilege	488	WMIC.exe
Token: SeSystemEnvironmentPrivilege	488	WMIC.exe
Token: SeRemoteShutdownPrivilege	488	WMIC.exe
Token: SeUndockPrivilege	488	WMIC.exe
Token: SeManageVolumePrivilege	488	WMIC.exe
Token: 33	488	WMIC.exe
Token: 34	488	WMIC.exe
Token: 35	488	WMIC.exe
Token: 36	488	WMIC.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 3268	4572	sex.exe	82
PID 4572 wrote to memory of 3268	4572	sex.exe	82
PID 4572 wrote to memory of 3268	4572	sex.exe	82
PID 3268 wrote to memory of 1592	3268	P1kAlMiG2Kb7.scr	84
PID 3268 wrote to memory of 1592	3268	P1kAlMiG2Kb7.scr	84
PID 3268 wrote to memory of 4868	3268	P1kAlMiG2Kb7.scr	85
PID 3268 wrote to memory of 4868	3268	P1kAlMiG2Kb7.scr	85
PID 3268 wrote to memory of 432	3268	P1kAlMiG2Kb7.scr	86
PID 3268 wrote to memory of 432	3268	P1kAlMiG2Kb7.scr	86
PID 3268 wrote to memory of 2980	3268	P1kAlMiG2Kb7.scr	87
PID 3268 wrote to memory of 2980	3268	P1kAlMiG2Kb7.scr	87
PID 3268 wrote to memory of 3996	3268	P1kAlMiG2Kb7.scr	88
PID 3268 wrote to memory of 3996	3268	P1kAlMiG2Kb7.scr	88
PID 1592 wrote to memory of 488	1592	cmd.exe	89
PID 1592 wrote to memory of 488	1592	cmd.exe	89
PID 4868 wrote to memory of 2356	4868	cmd.exe	90
PID 4868 wrote to memory of 2356	4868	cmd.exe	90
PID 3996 wrote to memory of 4908	3996	cmd.exe	92
PID 3996 wrote to memory of 4908	3996	cmd.exe	92
PID 432 wrote to memory of 1848	432	cmd.exe	91
PID 432 wrote to memory of 1848	432	cmd.exe	91
PID 2980 wrote to memory of 2640	2980	cmd.exe	93
PID 2980 wrote to memory of 2640	2980	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\sex.exe
"C:\Users\Admin\AppData\Local\Temp\sex.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4572
- C:\Users\Admin\AppData\Local\Temp\P1kAlMiG2Kb7.scr
  "C:\Users\Admin\AppData\Local\Temp\P1kAlMiG2Kb7.scr" /S
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3268
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c wmic shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1592
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete /nointeractive
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:488
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4868
  - - C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:2356
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c bcdedit /set {default} recoveryenabled No
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:432
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled No
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1848
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2980
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2640
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3996
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -command "Get-EventLog -LogName * | ForEach { Clear-EventLog $_.Log }"
      4⤵
      Command and Scripting Interpreter: PowerShell
      PID:4908

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
PID:35956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

1

T1006

Indicator Removal

2

T1070

File Deletion

2

T1070.004

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

3

T1490

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Downloads

C:\GET_YOUR_FILES_BACK.txt

Filesize
1011B

MD5
c92c2b70fb37f84aab38412ad9226aa8

SHA1
14f2e9a83285612d0a7b2c83b8f89bccfde6c154

SHA256
d64639e873c0873b469cd856d1ef4bce7dc14a80fac6fe2bed9d629f05acc77f

SHA512
04f9dcb3cd49909712535255b6eadd7fafcb2902bf1abd5a25e9bb5f5c4dc032611aec0a5b0ec89cd7dbc65276b935c54b906b391507d2e3e3aa65466b15f848

Download Submit
C:\Users\Admin\AppData\Local\Temp\P1kAlMiG2Kb7.scr

Filesize
807KB

MD5
e27b5291c8fb2dfdeb7f16bb6851df5e

SHA1
40207f83b601cd60905c1f807ac0889c80dfe33f

SHA256
ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f

SHA512
2ddbc50cd780ffbf73c354b9b437322eb49cb05bb6f287d54e7dcafb61dc4c4549e37ae2f972f3d240bfa7d2ca485b7583137f1bf038bc901f378cea0c305c6a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ls2ok1a4.oxo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4572-4-0x00007FF796D20000-0x00007FF796E3E000-memory.dmp

Filesize
1.1MB

Download
memory/4908-8445-0x0000026962780000-0x00000269627A2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads