75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e

Analysis

max time kernel
164s
max time network
205s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 07:40

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General

Target

75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe
Size

397KB
MD5

d1ff42bbf3cb032e645abb971be30e6c
SHA1

50c075163e3c1928d2e1d5e8bf8aa3826fdf3e85
SHA256

75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e
SHA512

84965cf4b07261748e6d3930e0f3cc27acb2e6d2568e206c4c246ced9bec593a38940b81cfb43f482b2a2216bfee887dba67fbac8858bb93bdc1121d7e5809a7
SSDEEP

1536:4yh5JT8iIHLryUCkffLUsKrqGloK6votWdZGu030J49+I+CZ3wes:4c558LHnyUbT/Io7B0843X3w

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
4156	winlogon.exe
1392	winlogon.exe
2504	winlogon.exe
4944	winlogon.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1052-134-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1052-136-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1052-137-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1052-140-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1052-144-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1392-150-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1392-151-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1392-154-0x0000000000400000-0x000000000041C000-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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 704 set thread context of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 4156 set thread context of 1392	4156	winlogon.exe	89
PID 1392 set thread context of 2504	1392	winlogon.exe	92
PID 1392 set thread context of 4944	1392	winlogon.exe	107

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2204	2504	WerFault.exe	92

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1052	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe
1392	winlogon.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 704 wrote to memory of 4256	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	83
PID 704 wrote to memory of 4256	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	83
PID 704 wrote to memory of 4256	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	83
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 704 wrote to memory of 1052	704	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	84
PID 1052 wrote to memory of 4156	1052	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	87
PID 1052 wrote to memory of 4156	1052	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	87
PID 1052 wrote to memory of 4156	1052	75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe	87
PID 4156 wrote to memory of 3144	4156	winlogon.exe	88
PID 4156 wrote to memory of 3144	4156	winlogon.exe	88
PID 4156 wrote to memory of 3144	4156	winlogon.exe	88
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 4156 wrote to memory of 1392	4156	winlogon.exe	89
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 2504	1392	winlogon.exe	92
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107
PID 1392 wrote to memory of 4944	1392	winlogon.exe	107

C:\Users\Admin\AppData\Local\Temp\75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe
"C:\Users\Admin\AppData\Local\Temp\75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:704
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\\svchost.exe
  2⤵
  PID:4256
- C:\Users\Admin\AppData\Local\Temp\75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e.exe
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1052
- - 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:4156
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\\svchost.exe
      4⤵
      PID:3144
  - - C:\Users\Admin\E696D64614\winlogon.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1392
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:2504
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2504 -s 12
        6⤵
        Program crash
        
        PID:2204
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:4944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2504 -ip 2504
1⤵
PID:1876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4944 -ip 4944
1⤵
PID:3124

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
397KB

MD5
d1ff42bbf3cb032e645abb971be30e6c

SHA1
50c075163e3c1928d2e1d5e8bf8aa3826fdf3e85

SHA256
75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e

SHA512
84965cf4b07261748e6d3930e0f3cc27acb2e6d2568e206c4c246ced9bec593a38940b81cfb43f482b2a2216bfee887dba67fbac8858bb93bdc1121d7e5809a7

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

Filesize
397KB

MD5
d1ff42bbf3cb032e645abb971be30e6c

SHA1
50c075163e3c1928d2e1d5e8bf8aa3826fdf3e85

SHA256
75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e

SHA512
84965cf4b07261748e6d3930e0f3cc27acb2e6d2568e206c4c246ced9bec593a38940b81cfb43f482b2a2216bfee887dba67fbac8858bb93bdc1121d7e5809a7

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

Filesize
397KB

MD5
d1ff42bbf3cb032e645abb971be30e6c

SHA1
50c075163e3c1928d2e1d5e8bf8aa3826fdf3e85

SHA256
75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e

SHA512
84965cf4b07261748e6d3930e0f3cc27acb2e6d2568e206c4c246ced9bec593a38940b81cfb43f482b2a2216bfee887dba67fbac8858bb93bdc1121d7e5809a7

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

Filesize
397KB

MD5
d1ff42bbf3cb032e645abb971be30e6c

SHA1
50c075163e3c1928d2e1d5e8bf8aa3826fdf3e85

SHA256
75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e

SHA512
84965cf4b07261748e6d3930e0f3cc27acb2e6d2568e206c4c246ced9bec593a38940b81cfb43f482b2a2216bfee887dba67fbac8858bb93bdc1121d7e5809a7

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

Filesize
397KB

MD5
d1ff42bbf3cb032e645abb971be30e6c

SHA1
50c075163e3c1928d2e1d5e8bf8aa3826fdf3e85

SHA256
75b8be410e2039671a02f38f56e7bb3048bed72b99ccefccd8f1d21d9299159e

SHA512
84965cf4b07261748e6d3930e0f3cc27acb2e6d2568e206c4c246ced9bec593a38940b81cfb43f482b2a2216bfee887dba67fbac8858bb93bdc1121d7e5809a7

Download Submit
memory/1052-134-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1052-136-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1052-137-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1052-140-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1052-144-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1392-150-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1392-151-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1392-154-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download