66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c

General

Target

66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
Size

399KB
MD5

e05211a125aaa576aaea4d34784feeb7
SHA1

a72fe7d8f9db241d478582797e3be33f47cf376d
SHA256

66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c
SHA512

8075da1e31d5eef99c062f16a6cff91607ffe2012a9253c369d8d71ab2c6834d13f0f54dfd19bc0722bc164d6a6239720dc46a3531d15d4ffe3c9192b5a94f1d
SSDEEP

1536:7I17SYMoQEeZ3tmnunbHq7eOHc3Hbuk93VMjBmGQSbcW+gZ372Fc0h:i4otehtmnuLqdHguq3pGz4W+g

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

winlogon.exewinlogon.exe

pid process

4656 winlogon.exe
4940 winlogon.exe

pid	process
4656	winlogon.exe
4940	winlogon.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3844-133-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/3844-135-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/3844-136-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/3844-139-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/3844-145-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/4940-152-0x0000000000400000-0x000000000041A000-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

Processes:

66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exewinlogon.exe

description	pid	process	target process
PID 2056 set thread context of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 4656 set thread context of 4940	4656	winlogon.exe	winlogon.exe

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

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exewinlogon.exe

pid process

3844 66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
4940 winlogon.exe

pid	process
3844	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
4940	winlogon.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exewinlogon.exe

description	pid	process	target process
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 2056 wrote to memory of 3844	2056	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
PID 3844 wrote to memory of 4656	3844	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	winlogon.exe
PID 3844 wrote to memory of 4656	3844	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	winlogon.exe
PID 3844 wrote to memory of 4656	3844	66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe
PID 4656 wrote to memory of 4940	4656	winlogon.exe	winlogon.exe

C:\Users\Admin\AppData\Local\Temp\66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
"C:\Users\Admin\AppData\Local\Temp\66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2056

C:\Users\Admin\AppData\Local\Temp\66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe
"C:\Users\Admin\AppData\Local\Temp\66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3844

C:\Users\Admin\E696D64614\winlogon.exe
"C:\Users\Admin\E696D64614\winlogon.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4656

C:\Users\Admin\E696D64614\winlogon.exe
"C:\Users\Admin\E696D64614\winlogon.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4940

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\E696D64614\winlogon.exe
Filesize
399KB

MD5
e05211a125aaa576aaea4d34784feeb7

SHA1
a72fe7d8f9db241d478582797e3be33f47cf376d

SHA256
66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c

SHA512
8075da1e31d5eef99c062f16a6cff91607ffe2012a9253c369d8d71ab2c6834d13f0f54dfd19bc0722bc164d6a6239720dc46a3531d15d4ffe3c9192b5a94f1d

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe
Filesize
399KB

MD5
e05211a125aaa576aaea4d34784feeb7

SHA1
a72fe7d8f9db241d478582797e3be33f47cf376d

SHA256
66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c

SHA512
8075da1e31d5eef99c062f16a6cff91607ffe2012a9253c369d8d71ab2c6834d13f0f54dfd19bc0722bc164d6a6239720dc46a3531d15d4ffe3c9192b5a94f1d

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe
Filesize
399KB

MD5
e05211a125aaa576aaea4d34784feeb7

SHA1
a72fe7d8f9db241d478582797e3be33f47cf376d

SHA256
66cbebbd63941908191fc300c5d2eb66cc76e27d07bed058b1edf92db98ede0c

SHA512
8075da1e31d5eef99c062f16a6cff91607ffe2012a9253c369d8d71ab2c6834d13f0f54dfd19bc0722bc164d6a6239720dc46a3531d15d4ffe3c9192b5a94f1d

Download Submit
memory/3844-132-0x0000000000000000-mapping.dmp

Download
memory/3844-133-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3844-135-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3844-136-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3844-139-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3844-145-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/4656-140-0x0000000000000000-mapping.dmp

Download
memory/4940-143-0x0000000000000000-mapping.dmp

Download
memory/4940-152-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads