f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

Analysis

max time kernel
146s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2022 02:38

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General

Target

f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe
Size

292KB
MD5

7e7b165e41d6d02a5fb98014f540a00f
SHA1

84ea77dcf260f7af084be796ef8d0c635ea7d9e6
SHA256

f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab
SHA512

5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4
SSDEEP

3072:iyf8n+BnNpiXN5U+M/hQuaCA3VMxDJAQO7LN:i/+BnNpCqP/hQuavirOH

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 5 IoCs

pid	Process
2260	winlogon.exe
5048	winlogon.exe
2840	winlogon.exe
1696	winlogon.exe
4192	winlogon.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4656-137-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4656-139-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4656-140-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/4656-149-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/5048-159-0x0000000000400000-0x000000000041C000-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	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 1336 set thread context of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 2260 set thread context of 5048	2260	winlogon.exe	86
PID 5048 set thread context of 2840	5048	winlogon.exe	87
PID 5048 set thread context of 1696	5048	winlogon.exe	97
PID 5048 set thread context of 4192	5048	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 3 IoCs

pid	pid_target	Process	procid_target
1704	2840	WerFault.exe	87
4744	1696	WerFault.exe	97
4804	4192	WerFault.exe	100

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4656	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe
5048	winlogon.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 4644	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	81
PID 1336 wrote to memory of 4644	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	81
PID 1336 wrote to memory of 4644	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	81
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 1336 wrote to memory of 4656	1336	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	82
PID 4656 wrote to memory of 2260	4656	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	84
PID 4656 wrote to memory of 2260	4656	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	84
PID 4656 wrote to memory of 2260	4656	f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe	84
PID 2260 wrote to memory of 364	2260	winlogon.exe	85
PID 2260 wrote to memory of 364	2260	winlogon.exe	85
PID 2260 wrote to memory of 364	2260	winlogon.exe	85
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 2260 wrote to memory of 5048	2260	winlogon.exe	86
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 2840	5048	winlogon.exe	87
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 1696	5048	winlogon.exe	97
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100
PID 5048 wrote to memory of 4192	5048	winlogon.exe	100

C:\Users\Admin\AppData\Local\Temp\f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe
"C:\Users\Admin\AppData\Local\Temp\f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\\svchost.exe
  2⤵
  PID:4644
- C:\Users\Admin\AppData\Local\Temp\f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab.exe
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4656
- - 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:2260
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\\svchost.exe
      4⤵
      PID:364
  - - C:\Users\Admin\E696D64614\winlogon.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:5048
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:2840
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2840 -s 12
        6⤵
        Program crash
        
        PID:1704
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:1696
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 12
        6⤵
        Program crash
        
        PID:4744
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:4192
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 12
        6⤵
        Program crash
        
        PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2840 -ip 2840
1⤵
PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1696 -ip 1696
1⤵
PID:4572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4192 -ip 4192
1⤵
PID:5004

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
292KB

MD5
7e7b165e41d6d02a5fb98014f540a00f

SHA1
84ea77dcf260f7af084be796ef8d0c635ea7d9e6

SHA256
f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

SHA512
5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4

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

Filesize
292KB

MD5
7e7b165e41d6d02a5fb98014f540a00f

SHA1
84ea77dcf260f7af084be796ef8d0c635ea7d9e6

SHA256
f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

SHA512
5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4

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

Filesize
292KB

MD5
7e7b165e41d6d02a5fb98014f540a00f

SHA1
84ea77dcf260f7af084be796ef8d0c635ea7d9e6

SHA256
f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

SHA512
5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4

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

Filesize
292KB

MD5
7e7b165e41d6d02a5fb98014f540a00f

SHA1
84ea77dcf260f7af084be796ef8d0c635ea7d9e6

SHA256
f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

SHA512
5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4

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

Filesize
292KB

MD5
7e7b165e41d6d02a5fb98014f540a00f

SHA1
84ea77dcf260f7af084be796ef8d0c635ea7d9e6

SHA256
f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

SHA512
5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4

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

Filesize
292KB

MD5
7e7b165e41d6d02a5fb98014f540a00f

SHA1
84ea77dcf260f7af084be796ef8d0c635ea7d9e6

SHA256
f8b7eafb707cf2abe605979a4e515a6d3da1e31276c76c16df4177fa7f44e8ab

SHA512
5adcc84e3e25c4091fa8fd9017dfb6ca1d2fa1028d156c47ae8ba32a88c4737c14f096ce6246ed6aed29171b9c44ee7ff83d3fe3ee8a48386de4cd506c5086c4

Download Submit
memory/364-146-0x0000000000000000-mapping.dmp

Download
memory/1696-160-0x0000000000000000-mapping.dmp

Download
memory/2260-143-0x0000000000000000-mapping.dmp

Download
memory/2840-156-0x0000000000000000-mapping.dmp

Download
memory/4192-163-0x0000000000000000-mapping.dmp

Download
memory/4644-135-0x0000000000000000-mapping.dmp

Download
memory/4656-149-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4656-140-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4656-139-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4656-137-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4656-136-0x0000000000000000-mapping.dmp

Download
memory/5048-147-0x0000000000000000-mapping.dmp

Download
memory/5048-159-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download