a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2022 02:13

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General

Target

a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe
Size

1.3MB
MD5

45b2f5034b07d3738a3ddaa9f1307df5
SHA1

cd608158817d7a2ebb957f36103d2206fd415f16
SHA256

a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1
SHA512

94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4
SSDEEP

3072:qXJCFRSt63wPwWYhVTjJ5cHymR7w0YmS8O:LdnWYD95z4w0Dt

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 5 IoCs

pid	Process
4700	winlogon.exe
3688	winlogon.exe
2600	winlogon.exe
4876	winlogon.exe
1836	winlogon.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1664-134-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1664-136-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1664-137-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1664-140-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1664-144-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/3688-154-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/3688-158-0x0000000000400000-0x000000000041C000-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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 3404 set thread context of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 4700 set thread context of 3688	4700	winlogon.exe	86
PID 3688 set thread context of 2600	3688	winlogon.exe	87
PID 3688 set thread context of 4876	3688	winlogon.exe	96
PID 3688 set thread context of 1836	3688	winlogon.exe	101

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
3716	2600	WerFault.exe	87
2940	4876	WerFault.exe	96
4480	1836	WerFault.exe	101

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1664	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe
3688	winlogon.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 636	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	81
PID 3404 wrote to memory of 636	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	81
PID 3404 wrote to memory of 636	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	81
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 3404 wrote to memory of 1664	3404	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	82
PID 1664 wrote to memory of 4700	1664	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	84
PID 1664 wrote to memory of 4700	1664	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	84
PID 1664 wrote to memory of 4700	1664	a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe	84
PID 4700 wrote to memory of 3148	4700	winlogon.exe	85
PID 4700 wrote to memory of 3148	4700	winlogon.exe	85
PID 4700 wrote to memory of 3148	4700	winlogon.exe	85
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 4700 wrote to memory of 3688	4700	winlogon.exe	86
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 2600	3688	winlogon.exe	87
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 4876	3688	winlogon.exe	96
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101
PID 3688 wrote to memory of 1836	3688	winlogon.exe	101

C:\Users\Admin\AppData\Local\Temp\a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe
"C:\Users\Admin\AppData\Local\Temp\a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\\svchost.exe
  2⤵
  PID:636
- C:\Users\Admin\AppData\Local\Temp\a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1.exe
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1664
- - 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:4700
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\\svchost.exe
      4⤵
      PID:3148
  - - C:\Users\Admin\E696D64614\winlogon.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3688
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:2600
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2600 -s 12
        6⤵
        Program crash
        
        PID:3716
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:4876
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 12
        6⤵
        Program crash
        
        PID:2940
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:1836
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 12
        6⤵
        Program crash
        
        PID:4480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2600 -ip 2600
1⤵
PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4876 -ip 4876
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1836 -ip 1836
1⤵
PID:4204

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
1.3MB

MD5
45b2f5034b07d3738a3ddaa9f1307df5

SHA1
cd608158817d7a2ebb957f36103d2206fd415f16

SHA256
a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

SHA512
94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4

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

Filesize
1.3MB

MD5
45b2f5034b07d3738a3ddaa9f1307df5

SHA1
cd608158817d7a2ebb957f36103d2206fd415f16

SHA256
a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

SHA512
94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4

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

Filesize
1.3MB

MD5
45b2f5034b07d3738a3ddaa9f1307df5

SHA1
cd608158817d7a2ebb957f36103d2206fd415f16

SHA256
a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

SHA512
94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4

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

Filesize
1.3MB

MD5
45b2f5034b07d3738a3ddaa9f1307df5

SHA1
cd608158817d7a2ebb957f36103d2206fd415f16

SHA256
a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

SHA512
94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4

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

Filesize
1.3MB

MD5
45b2f5034b07d3738a3ddaa9f1307df5

SHA1
cd608158817d7a2ebb957f36103d2206fd415f16

SHA256
a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

SHA512
94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4

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

Filesize
1.3MB

MD5
45b2f5034b07d3738a3ddaa9f1307df5

SHA1
cd608158817d7a2ebb957f36103d2206fd415f16

SHA256
a5804a09b689daffd0be303f2cdaa95d880bf5dc7a203ee3048cd0585e13f1e1

SHA512
94208c685120ae40cfbac2ae2996612b8a1c6abf827edfacdaa238c5bb4e57f1b2f5a5ea937731774b20dfe49305fc5e2aca5bf74a14c1753101405ea41ab1f4

Download Submit
memory/1664-140-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1664-134-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1664-144-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1664-137-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1664-136-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3688-158-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3688-154-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download