1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2

Analysis

max time kernel
151s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2022 07:57

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General

Target

1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe
Size

101KB
MD5

08667d50614283b754849916f2e004c0
SHA1

4cc1cafa4e152d6ba18bcac134be655b718953b4
SHA256

1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2
SHA512

26af18becae39adc387235fe0d1a85a5b157886298724da7010f3a307198a135c48d986f52399fc5f6c1b210d22c2347818bc1642803875d336ecceee12aee67
SSDEEP

1536:9QxqcQu0XPmEmEcYUpEjCTfaAIW1EvqTlrxtPpFAXF9N/6Sy:y/03mEcppEjCTfaAIWSqTlrbPLEz4

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 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\userinit = "C:\\Windows\\system32\\twext.exe,"	6tyF64B.exe

Executes dropped EXE 2 IoCs

pid	Process
2796	6tyF64B.exe
1412	6tyF64B.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\twext.exe	6tyF64B.exe
File created	C:\Windows\SysWOW64\twext.exe	6tyF64B.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 1412	2796	6tyF64B.exe	82

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1412	6tyF64B.exe
1412	6tyF64B.exe
1412	6tyF64B.exe
1412	6tyF64B.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	6tyF64B.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2796	6tyF64B.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 2796	3852	1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe	81
PID 3852 wrote to memory of 2796	3852	1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe	81
PID 3852 wrote to memory of 2796	3852	1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe	81
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 2796 wrote to memory of 1412	2796	6tyF64B.exe	82
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3
PID 1412 wrote to memory of 608	1412	6tyF64B.exe	3

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:608

C:\Users\Admin\AppData\Local\Temp\1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe
"C:\Users\Admin\AppData\Local\Temp\1ead08a142ce14889263f103325d442f7d76c1c282419c4b76876ab856aafef2.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe
  "C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe
    "C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe

Filesize
74KB

MD5
5b1a85d948bd7a075ebd0df2296ae9d5

SHA1
2b7cab4c68ca6c0fa28b360f9eb4673e7b075a24

SHA256
8cfb09392dd6cf7042c9aa9c98fbc9ef5969441d9cbf9d142fd5cbb9d70cd121

SHA512
46f05ba3117297faab0a7279d0791fd2e1daebcf9dbcbffaa17c2ee34ac3a68b4b8a40d4d73431a9da7e4a4c293aaf7a9f4bde2d4c93aa4f883c57fb6b2c0575

Download Submit
C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe

Filesize
74KB

MD5
5b1a85d948bd7a075ebd0df2296ae9d5

SHA1
2b7cab4c68ca6c0fa28b360f9eb4673e7b075a24

SHA256
8cfb09392dd6cf7042c9aa9c98fbc9ef5969441d9cbf9d142fd5cbb9d70cd121

SHA512
46f05ba3117297faab0a7279d0791fd2e1daebcf9dbcbffaa17c2ee34ac3a68b4b8a40d4d73431a9da7e4a4c293aaf7a9f4bde2d4c93aa4f883c57fb6b2c0575

Download Submit
C:\Users\Admin\AppData\Local\Temp\6tyF64B.exe

Filesize
74KB

MD5
5b1a85d948bd7a075ebd0df2296ae9d5

SHA1
2b7cab4c68ca6c0fa28b360f9eb4673e7b075a24

SHA256
8cfb09392dd6cf7042c9aa9c98fbc9ef5969441d9cbf9d142fd5cbb9d70cd121

SHA512
46f05ba3117297faab0a7279d0791fd2e1daebcf9dbcbffaa17c2ee34ac3a68b4b8a40d4d73431a9da7e4a4c293aaf7a9f4bde2d4c93aa4f883c57fb6b2c0575

Download Submit
memory/608-197-0x0000000019250000-0x0000000019276000-memory.dmp

Filesize
152KB

Download
memory/608-202-0x0000000019280000-0x00000000192A6000-memory.dmp

Filesize
152KB

Download
memory/608-242-0x0000000019400000-0x0000000019426000-memory.dmp

Filesize
152KB

Download
memory/608-237-0x00000000193D0000-0x00000000193F6000-memory.dmp

Filesize
152KB

Download
memory/608-232-0x00000000193A0000-0x00000000193C6000-memory.dmp

Filesize
152KB

Download
memory/608-227-0x0000000019370000-0x0000000019396000-memory.dmp

Filesize
152KB

Download
memory/608-222-0x0000000019340000-0x0000000019366000-memory.dmp

Filesize
152KB

Download
memory/608-217-0x0000000019310000-0x0000000019336000-memory.dmp

Filesize
152KB

Download
memory/608-212-0x00000000192E0000-0x0000000019306000-memory.dmp

Filesize
152KB

Download
memory/608-152-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/608-157-0x00000000190D0000-0x00000000190F6000-memory.dmp

Filesize
152KB

Download
memory/608-162-0x0000000019100000-0x0000000019126000-memory.dmp

Filesize
152KB

Download
memory/608-167-0x0000000019130000-0x0000000019156000-memory.dmp

Filesize
152KB

Download
memory/608-172-0x0000000019160000-0x0000000019186000-memory.dmp

Filesize
152KB

Download
memory/608-177-0x0000000019190000-0x00000000191B6000-memory.dmp

Filesize
152KB

Download
memory/608-182-0x00000000191C0000-0x00000000191E6000-memory.dmp

Filesize
152KB

Download
memory/608-187-0x00000000191F0000-0x0000000019216000-memory.dmp

Filesize
152KB

Download
memory/608-192-0x0000000019220000-0x0000000019246000-memory.dmp

Filesize
152KB

Download
memory/608-207-0x00000000192B0000-0x00000000192D6000-memory.dmp

Filesize
152KB

Download
memory/1412-138-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1412-147-0x0000000000410000-0x0000000000412000-memory.dmp

Filesize
8KB

Download
memory/1412-145-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1412-144-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1412-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1412-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1412-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download