12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee

General

Target

12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
Size

619KB
MD5

464dc36b66a7a838464b8b971bc61a6b
SHA1

063f715b9a864d6a14d358b1a7f52c85ee22caf1
SHA256

12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee
SHA512

f15abc22ee0ca2f1e7c5abf61742db49bb2cc77139d55cb9e18e7ac1123176c31e7396d3764fbe8fde0517e988a76cbb6d5d28f66d6805b7fc67a077f4af667b
SSDEEP

12288:x6Wq4aaE6KwyF5L0Y2D1PqLnFdLMOvGeD86h73ToEhbRcl:HthEVaPqLoiHH3TPhbql

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 4 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	zzbrenkzx.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	zzbrenkzx.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	zzbrenkzx.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe = "C:\\Users\\Admin\\AppData\\Roaming\\zzbrenkzx.exe:*:Enabled:qu63647assbncvhbsdggh"	zzbrenkzx.exe

Executes dropped EXE 2 IoCs

pid	Process
4284	zzbrenkzx.exe
4316	zzbrenkzx.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3472-132-0x0000000000400000-0x00000000004F8000-memory.dmp	upx
behavioral2/memory/3472-137-0x0000000000400000-0x00000000004F8000-memory.dmp	upx
behavioral2/files/0x000700000001e478-140.dat	upx
behavioral2/files/0x000700000001e478-141.dat	upx
behavioral2/files/0x000700000001e478-145.dat	upx
behavioral2/memory/4284-148-0x0000000000400000-0x00000000004F8000-memory.dmp	upx

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe"	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\aksjbnveytr6gfghdhurh = "C:\\Users\\Admin\\AppData\\Roaming\\zzbrenkzx.exe"	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	zzbrenkzx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\zzbrenkzx.exe = "C:\\Users\\Admin\\AppData\\Roaming\\zzbrenkzx.exe"	zzbrenkzx.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Taskman = "C:\\Users\\Admin\\AppData\\Roaming\\zzbrenkzx.exe"	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3472-137-0x0000000000400000-0x00000000004F8000-memory.dmp	autoit_exe
behavioral2/memory/4284-148-0x0000000000400000-0x00000000004F8000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3472 set thread context of 4780	3472	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	78
PID 4284 set thread context of 4316	4284	zzbrenkzx.exe	80

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 4780	3472	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	78
PID 3472 wrote to memory of 4780	3472	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	78
PID 3472 wrote to memory of 4780	3472	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	78
PID 3472 wrote to memory of 4780	3472	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	78
PID 3472 wrote to memory of 4780	3472	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	78
PID 4780 wrote to memory of 4284	4780	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	79
PID 4780 wrote to memory of 4284	4780	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	79
PID 4780 wrote to memory of 4284	4780	12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe	79
PID 4284 wrote to memory of 4316	4284	zzbrenkzx.exe	80
PID 4284 wrote to memory of 4316	4284	zzbrenkzx.exe	80
PID 4284 wrote to memory of 4316	4284	zzbrenkzx.exe	80
PID 4284 wrote to memory of 4316	4284	zzbrenkzx.exe	80
PID 4284 wrote to memory of 4316	4284	zzbrenkzx.exe	80

C:\Users\Admin\AppData\Local\Temp\12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
"C:\Users\Admin\AppData\Local\Temp\12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Users\Admin\AppData\Local\Temp\12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee.exe
  C:\Windows\SysWOW64\explorer.exe
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies WinLogon
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe
    "C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4284
  - - C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe
      C:\Windows\SysWOW64\explorer.exe
      4⤵
      Modifies firewall policy service
      Executes dropped EXE
      PID:4316

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\fk1xxx.e2ts

Filesize
50KB

MD5
c286f576669ca79f3b34dd5fb571519a

SHA1
63456e47a2454d59ed3537e6315eddcd0f980fad

SHA256
48e63262cddf51d64263764ff7b845cea1fae231c2eefe4b7da02c783ae27691

SHA512
0c665e0396051909300617da3d10c2b7dbb4386033250a03866c7e626666a742f12ef7867de223b1bfeb7d7724bae0be49c8258d7178ab1007d67a9e55e68362

Download Submit
C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe

Filesize
619KB

MD5
464dc36b66a7a838464b8b971bc61a6b

SHA1
063f715b9a864d6a14d358b1a7f52c85ee22caf1

SHA256
12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee

SHA512
f15abc22ee0ca2f1e7c5abf61742db49bb2cc77139d55cb9e18e7ac1123176c31e7396d3764fbe8fde0517e988a76cbb6d5d28f66d6805b7fc67a077f4af667b

Download Submit
C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe

Filesize
619KB

MD5
464dc36b66a7a838464b8b971bc61a6b

SHA1
063f715b9a864d6a14d358b1a7f52c85ee22caf1

SHA256
12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee

SHA512
f15abc22ee0ca2f1e7c5abf61742db49bb2cc77139d55cb9e18e7ac1123176c31e7396d3764fbe8fde0517e988a76cbb6d5d28f66d6805b7fc67a077f4af667b

Download Submit
C:\Users\Admin\AppData\Roaming\zzbrenkzx.exe

Filesize
619KB

MD5
464dc36b66a7a838464b8b971bc61a6b

SHA1
063f715b9a864d6a14d358b1a7f52c85ee22caf1

SHA256
12ec0d5101214c7e6254fcf0b441c4d8ab1870372c96901d534c6bf9724c5aee

SHA512
f15abc22ee0ca2f1e7c5abf61742db49bb2cc77139d55cb9e18e7ac1123176c31e7396d3764fbe8fde0517e988a76cbb6d5d28f66d6805b7fc67a077f4af667b

Download Submit
memory/3472-132-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/3472-137-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4284-148-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4316-147-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4316-149-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4780-138-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4780-136-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4780-134-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads