a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1

Analysis

max time kernel
155s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2022, 04:58

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General

Target

a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe
Size

98KB
MD5

3f89d99c1240af69375689d123916d10
SHA1

1ca2546306dd1b1bdb970b2b7ef3353b8b4e0281
SHA256

a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1
SHA512

e8f2d6432c44c52dcd2c8a787ae4eb5a9eeb74a9288afc65ca35fa2c954c2da4a2f18a4628a8ff3dd0c1d640db935e95583fb89aa7f04bbf9c6a9f8d20e4bd4d
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,"	6tyE777.exe

Executes dropped EXE 2 IoCs

pid	Process
2492	6tyE777.exe
4768	6tyE777.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\twext.exe	6tyE777.exe
File opened for modification	C:\Windows\SysWOW64\twext.exe	6tyE777.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2492 set thread context of 4768	2492	6tyE777.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
4768	6tyE777.exe
4768	6tyE777.exe
4768	6tyE777.exe
4768	6tyE777.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4768	6tyE777.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2492	6tyE777.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2492	2012	a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe	79
PID 2012 wrote to memory of 2492	2012	a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe	79
PID 2012 wrote to memory of 2492	2012	a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe	79
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 2492 wrote to memory of 4768	2492	6tyE777.exe	82
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3
PID 4768 wrote to memory of 596	4768	6tyE777.exe	3

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:596

C:\Users\Admin\AppData\Local\Temp\a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe
"C:\Users\Admin\AppData\Local\Temp\a9278d263852cc3c17c8bff3d69f400e6223d6de2698e89243cc30946a4be5c1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\6tyE777.exe
  "C:\Users\Admin\AppData\Local\Temp\6tyE777.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Users\Admin\AppData\Local\Temp\6tyE777.exe
    "C:\Users\Admin\AppData\Local\Temp\6tyE777.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:4768

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\6tyE777.exe

Filesize
74KB

MD5
5b1a85d948bd7a075ebd0df2296ae9d5

SHA1
2b7cab4c68ca6c0fa28b360f9eb4673e7b075a24

SHA256
8cfb09392dd6cf7042c9aa9c98fbc9ef5969441d9cbf9d142fd5cbb9d70cd121

SHA512
46f05ba3117297faab0a7279d0791fd2e1daebcf9dbcbffaa17c2ee34ac3a68b4b8a40d4d73431a9da7e4a4c293aaf7a9f4bde2d4c93aa4f883c57fb6b2c0575

Download Submit
C:\Users\Admin\AppData\Local\Temp\6tyE777.exe

Filesize
74KB

MD5
5b1a85d948bd7a075ebd0df2296ae9d5

SHA1
2b7cab4c68ca6c0fa28b360f9eb4673e7b075a24

SHA256
8cfb09392dd6cf7042c9aa9c98fbc9ef5969441d9cbf9d142fd5cbb9d70cd121

SHA512
46f05ba3117297faab0a7279d0791fd2e1daebcf9dbcbffaa17c2ee34ac3a68b4b8a40d4d73431a9da7e4a4c293aaf7a9f4bde2d4c93aa4f883c57fb6b2c0575

Download Submit
C:\Users\Admin\AppData\Local\Temp\6tyE777.exe

Filesize
74KB

MD5
5b1a85d948bd7a075ebd0df2296ae9d5

SHA1
2b7cab4c68ca6c0fa28b360f9eb4673e7b075a24

SHA256
8cfb09392dd6cf7042c9aa9c98fbc9ef5969441d9cbf9d142fd5cbb9d70cd121

SHA512
46f05ba3117297faab0a7279d0791fd2e1daebcf9dbcbffaa17c2ee34ac3a68b4b8a40d4d73431a9da7e4a4c293aaf7a9f4bde2d4c93aa4f883c57fb6b2c0575

Download Submit
memory/596-167-0x0000000010F60000-0x0000000010F86000-memory.dmp

Filesize
152KB

Download
memory/596-212-0x0000000011110000-0x0000000011136000-memory.dmp

Filesize
152KB

Download
memory/596-242-0x0000000011230000-0x0000000011256000-memory.dmp

Filesize
152KB

Download
memory/596-237-0x0000000011200000-0x0000000011226000-memory.dmp

Filesize
152KB

Download
memory/596-232-0x00000000111D0000-0x00000000111F6000-memory.dmp

Filesize
152KB

Download
memory/596-227-0x00000000111A0000-0x00000000111C6000-memory.dmp

Filesize
152KB

Download
memory/596-222-0x0000000011170000-0x0000000011196000-memory.dmp

Filesize
152KB

Download
memory/596-217-0x0000000011140000-0x0000000011166000-memory.dmp

Filesize
152KB

Download
memory/596-182-0x0000000010FF0000-0x0000000011016000-memory.dmp

Filesize
152KB

Download
memory/596-207-0x00000000110E0000-0x0000000011106000-memory.dmp

Filesize
152KB

Download
memory/596-152-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/596-157-0x0000000010F00000-0x0000000010F26000-memory.dmp

Filesize
152KB

Download
memory/596-162-0x0000000010F30000-0x0000000010F56000-memory.dmp

Filesize
152KB

Download
memory/596-202-0x00000000110B0000-0x00000000110D6000-memory.dmp

Filesize
152KB

Download
memory/596-177-0x0000000010FC0000-0x0000000010FE6000-memory.dmp

Filesize
152KB

Download
memory/596-197-0x0000000011080000-0x00000000110A6000-memory.dmp

Filesize
152KB

Download
memory/596-172-0x0000000010F90000-0x0000000010FB6000-memory.dmp

Filesize
152KB

Download
memory/596-187-0x0000000011020000-0x0000000011046000-memory.dmp

Filesize
152KB

Download
memory/596-192-0x0000000011050000-0x0000000011076000-memory.dmp

Filesize
152KB

Download
memory/4768-138-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4768-147-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4768-145-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4768-146-0x0000000000410000-0x0000000000412000-memory.dmp

Filesize
8KB

Download
memory/4768-144-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4768-141-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4768-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4768-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download