c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1

Analysis

max time kernel
153s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2022, 16:22

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General

Target
c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe
Size 917KB
Sample221019-tva7vsfeg6
SHA256 c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1
MD5 9159c8b0a22371cd2fea3ec9554fa980
SHA1 d3d68c39c329c3e8751eafeebc76e56dc3b5c8a5
SHA512 e0b94ccf54463a968dd91dddb93a3e57dfdd7a8f1a4d5f68b4a00c0c7aacca70f4b211c582080066841aa947c3788fa68331832a041b5a607a693d7b45d1a29b
SSDEEP 3072:wAa77MTZm8mSPFHCvJNZNQ+CTAxvY4L3+IzD9Z:wAFl9FCln2A17L3+kR
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
1804	winlogon.exe
3908	winlogon.exe
4780	winlogon.exe
4788	winlogon.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5068-134-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/5068-136-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/5068-137-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/5068-140-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/5068-148-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/3908-154-0x0000000000400000-0x000000000041C000-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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1176 set thread context of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1804 set thread context of 3908	1804	winlogon.exe	86
PID 3908 set thread context of 4780	3908	winlogon.exe	90
PID 3908 set thread context of 4788	3908	winlogon.exe	100

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3660	4780	WerFault.exe	90
3800	4788	WerFault.exe	100

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5068	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe
3908	winlogon.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 4332	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	25
PID 1176 wrote to memory of 4332	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	25
PID 1176 wrote to memory of 4332	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	25
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 1176 wrote to memory of 5068	1176	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	24
PID 5068 wrote to memory of 1804	5068	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	88
PID 5068 wrote to memory of 1804	5068	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	88
PID 5068 wrote to memory of 1804	5068	c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe	88
PID 1804 wrote to memory of 3844	1804	winlogon.exe	87
PID 1804 wrote to memory of 3844	1804	winlogon.exe	87
PID 1804 wrote to memory of 3844	1804	winlogon.exe	87
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 1804 wrote to memory of 3908	1804	winlogon.exe	86
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4780	3908	winlogon.exe	90
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100
PID 3908 wrote to memory of 4788	3908	winlogon.exe	100

C:\Users\Admin\AppData\Local\Temp\c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe
"C:\Users\Admin\AppData\Local\Temp\c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1176
- C:\Users\Admin\AppData\Local\Temp\c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1.exe
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5068
- - 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:1804
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\\svchost.exe
  2⤵
  PID:4332

C:\Users\Admin\E696D64614\winlogon.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Users\Admin\E696D64614\winlogon.exe
  "C:\Users\Admin\E696D64614\winlogon.exe"
  2⤵
  - Executes dropped EXE
  PID:4780
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4780 -s 12
    3⤵
    - Program crash
    PID:3660
- C:\Users\Admin\E696D64614\winlogon.exe
  "C:\Users\Admin\E696D64614\winlogon.exe"
  2⤵
  - Executes dropped EXE
  PID:4788
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4788 -s 12
    3⤵
    - Program crash
    PID:3800

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\\svchost.exe
1⤵
PID:3844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4780 -ip 4780
1⤵
PID:3464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4788 -ip 4788
1⤵
PID:4812

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

winlogon.exe

Path C:\Users\Admin\E696D64614\winlogon.exe
Size 917KB
SHA256 c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1
MD5 9159c8b0a22371cd2fea3ec9554fa980
SHA1 d3d68c39c329c3e8751eafeebc76e56dc3b5c8a5
SHA512 e0b94ccf54463a968dd91dddb93a3e57dfdd7a8f1a4d5f68b4a00c0c7aacca70f4b211c582080066841aa947c3788fa68331832a041b5a607a693d7b45d1a29b
SSDEEP 3072:wAa77MTZm8mSPFHCvJNZNQ+CTAxvY4L3+IzD9Z:wAFl9FCln2A17L3+kR
MD5 SHA1 SHA512 SSDEEP

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winlogon.exe

Path C:\Users\Admin\E696D64614\winlogon.exe
Size 917KB
SHA256 c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1
MD5 9159c8b0a22371cd2fea3ec9554fa980
SHA1 d3d68c39c329c3e8751eafeebc76e56dc3b5c8a5
SHA512 e0b94ccf54463a968dd91dddb93a3e57dfdd7a8f1a4d5f68b4a00c0c7aacca70f4b211c582080066841aa947c3788fa68331832a041b5a607a693d7b45d1a29b
SSDEEP 3072:wAa77MTZm8mSPFHCvJNZNQ+CTAxvY4L3+IzD9Z:wAFl9FCln2A17L3+kR
MD5 SHA1 SHA512 SSDEEP

Submit Download

winlogon.exe

Path C:\Users\Admin\E696D64614\winlogon.exe
Size 917KB
SHA256 c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1
MD5 9159c8b0a22371cd2fea3ec9554fa980
SHA1 d3d68c39c329c3e8751eafeebc76e56dc3b5c8a5
SHA512 e0b94ccf54463a968dd91dddb93a3e57dfdd7a8f1a4d5f68b4a00c0c7aacca70f4b211c582080066841aa947c3788fa68331832a041b5a607a693d7b45d1a29b
SSDEEP 3072:wAa77MTZm8mSPFHCvJNZNQ+CTAxvY4L3+IzD9Z:wAFl9FCln2A17L3+kR
MD5 SHA1 SHA512 SSDEEP

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winlogon.exe

Path C:\Users\Admin\E696D64614\winlogon.exe
Size 917KB
SHA256 c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1
MD5 9159c8b0a22371cd2fea3ec9554fa980
SHA1 d3d68c39c329c3e8751eafeebc76e56dc3b5c8a5
SHA512 e0b94ccf54463a968dd91dddb93a3e57dfdd7a8f1a4d5f68b4a00c0c7aacca70f4b211c582080066841aa947c3788fa68331832a041b5a607a693d7b45d1a29b
SSDEEP 3072:wAa77MTZm8mSPFHCvJNZNQ+CTAxvY4L3+IzD9Z:wAFl9FCln2A17L3+kR
MD5 SHA1 SHA512 SSDEEP

Submit Download

winlogon.exe

Path C:\Users\Admin\E696D64614\winlogon.exe
Size 917KB
SHA256 c1b6827ec9a68e9f47faebc735fa94afeb5593eb5320cc396af0e3a6cdfd48d1
MD5 9159c8b0a22371cd2fea3ec9554fa980
SHA1 d3d68c39c329c3e8751eafeebc76e56dc3b5c8a5
SHA512 e0b94ccf54463a968dd91dddb93a3e57dfdd7a8f1a4d5f68b4a00c0c7aacca70f4b211c582080066841aa947c3788fa68331832a041b5a607a693d7b45d1a29b
SSDEEP 3072:wAa77MTZm8mSPFHCvJNZNQ+CTAxvY4L3+IzD9Z:wAFl9FCln2A17L3+kR
MD5 SHA1 SHA512 SSDEEP

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memory/3908-154-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/5068-134-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/5068-148-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/5068-137-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/5068-136-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/5068-140-0x0000000000400000-0x000000000041C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads