66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6

Analysis

max time kernel
126s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 03:48

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General

Target

66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe
Size

890KB
MD5

9c0b63cb17fa4ee66900da0f06cc3e4e
SHA1

ac19722da1fbf52eb9656ba59d818906829220f0
SHA256

66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6
SHA512

f18d6349f5cb180f2f8179d3c94dd1da6978e7dfc04ff9aa495b32a7d0b793f2df5b4c3fab7d9e262fd2b1f589b19ed0644c00f93a713397796e7c81f00e7a97
SSDEEP

1536:hO20qHkRRNpTNJo9KJt7i3ukMV111I8Yp45wzvShJFIn8lq93oFDeUXtk3ns:hMRjVo9uFiJu11upaEMq8Y3Utm

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
4592	winlogon.exe
4752	winlogon.exe
2256	winlogon.exe
3144	winlogon.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1140-134-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1140-136-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1140-137-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1140-140-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1140-150-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4752-154-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4752-158-0x0000000000400000-0x000000000041C000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1092 set thread context of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 4592 set thread context of 4752	4592	winlogon.exe	83
PID 4752 set thread context of 2256	4752	winlogon.exe	87
PID 4752 set thread context of 3144	4752	winlogon.exe	98

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
2420	2256	WerFault.exe	87
2468	3144	WerFault.exe	98

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1140	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe
4752	winlogon.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 4808	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	80
PID 1092 wrote to memory of 4808	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	80
PID 1092 wrote to memory of 4808	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	80
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1092 wrote to memory of 1140	1092	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	81
PID 1140 wrote to memory of 4592	1140	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	85
PID 1140 wrote to memory of 4592	1140	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	85
PID 1140 wrote to memory of 4592	1140	66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe	85
PID 4592 wrote to memory of 2000	4592	winlogon.exe	84
PID 4592 wrote to memory of 2000	4592	winlogon.exe	84
PID 4592 wrote to memory of 2000	4592	winlogon.exe	84
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4592 wrote to memory of 4752	4592	winlogon.exe	83
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 2256	4752	winlogon.exe	87
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98
PID 4752 wrote to memory of 3144	4752	winlogon.exe	98

C:\Users\Admin\AppData\Local\Temp\66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe
"C:\Users\Admin\AppData\Local\Temp\66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\\svchost.exe
  2⤵
  PID:4808
- C:\Users\Admin\AppData\Local\Temp\66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6.exe
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1140
- - 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:4592

C:\Users\Admin\E696D64614\winlogon.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Users\Admin\E696D64614\winlogon.exe
  "C:\Users\Admin\E696D64614\winlogon.exe"
  2⤵
  - Executes dropped EXE
  PID:2256
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 12
    3⤵
    - Program crash
    PID:2420
- C:\Users\Admin\E696D64614\winlogon.exe
  "C:\Users\Admin\E696D64614\winlogon.exe"
  2⤵
  - Executes dropped EXE
  PID:3144
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3144 -s 12
    3⤵
    - Program crash
    PID:2468

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\\svchost.exe
1⤵
PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2256 -ip 2256
1⤵
PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 3144 -ip 3144
1⤵
PID:1252

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

Replay Monitor

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Downloads

C:\Users\Admin\E696D64614\winlogon.exe

Filesize
890KB

MD5
9c0b63cb17fa4ee66900da0f06cc3e4e

SHA1
ac19722da1fbf52eb9656ba59d818906829220f0

SHA256
66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6

SHA512
f18d6349f5cb180f2f8179d3c94dd1da6978e7dfc04ff9aa495b32a7d0b793f2df5b4c3fab7d9e262fd2b1f589b19ed0644c00f93a713397796e7c81f00e7a97

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
890KB

MD5
9c0b63cb17fa4ee66900da0f06cc3e4e

SHA1
ac19722da1fbf52eb9656ba59d818906829220f0

SHA256
66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6

SHA512
f18d6349f5cb180f2f8179d3c94dd1da6978e7dfc04ff9aa495b32a7d0b793f2df5b4c3fab7d9e262fd2b1f589b19ed0644c00f93a713397796e7c81f00e7a97

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
890KB

MD5
9c0b63cb17fa4ee66900da0f06cc3e4e

SHA1
ac19722da1fbf52eb9656ba59d818906829220f0

SHA256
66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6

SHA512
f18d6349f5cb180f2f8179d3c94dd1da6978e7dfc04ff9aa495b32a7d0b793f2df5b4c3fab7d9e262fd2b1f589b19ed0644c00f93a713397796e7c81f00e7a97

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
890KB

MD5
9c0b63cb17fa4ee66900da0f06cc3e4e

SHA1
ac19722da1fbf52eb9656ba59d818906829220f0

SHA256
66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6

SHA512
f18d6349f5cb180f2f8179d3c94dd1da6978e7dfc04ff9aa495b32a7d0b793f2df5b4c3fab7d9e262fd2b1f589b19ed0644c00f93a713397796e7c81f00e7a97

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
890KB

MD5
9c0b63cb17fa4ee66900da0f06cc3e4e

SHA1
ac19722da1fbf52eb9656ba59d818906829220f0

SHA256
66f6904751985f14aea6e5ff73c7ccd6fc68b4795b9a7bc0f4665f094b4f02f6

SHA512
f18d6349f5cb180f2f8179d3c94dd1da6978e7dfc04ff9aa495b32a7d0b793f2df5b4c3fab7d9e262fd2b1f589b19ed0644c00f93a713397796e7c81f00e7a97

Download Submit
memory/1140-150-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1140-134-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1140-140-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1140-137-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1140-136-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4752-154-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4752-158-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download