b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e

Analysis

max time kernel
148s
max time network
146s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 20:26

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General

Target

b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe
Size

216KB
MD5

56e194f08625e669fe2adf839a2d3c3e
SHA1

f1a175648979ff62915cb7bbc9748ce35ac7ce34
SHA256

b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e
SHA512

05668c29424929494e6f611edc3761efd686695c33da3221a25b924e834b68a535a5e66e7fd48c0bce052d7e010b43163fc7b775a1f91a4021b6637bba4ff3c6
SSDEEP

3072:dwUdJiVyG3yEdhcmLF8RuQKXM/FJsWQ4YgTuosTc+43Ggo/Mzrl/Z4++UnMryAlu:+UdJiuE3TeOoUWbYnfnknDL+UnMryAl

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
332	winlog.exe
1332	winlog.exe

Loads dropped DLL 2 IoCs

pid	Process
1748	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe
1748	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	winlog.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlog.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\winlog.exe"	winlog.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\T:	winlog.exe
File opened (read-only)	\??\W:	winlog.exe
File opened (read-only)	\??\R:	winlog.exe
File opened (read-only)	\??\I:	winlog.exe
File opened (read-only)	\??\K:	winlog.exe
File opened (read-only)	\??\L:	winlog.exe
File opened (read-only)	\??\N:	winlog.exe
File opened (read-only)	\??\P:	winlog.exe
File opened (read-only)	\??\V:	winlog.exe
File opened (read-only)	\??\F:	winlog.exe
File opened (read-only)	\??\M:	winlog.exe
File opened (read-only)	\??\O:	winlog.exe
File opened (read-only)	\??\S:	winlog.exe
File opened (read-only)	\??\U:	winlog.exe
File opened (read-only)	\??\J:	winlog.exe
File opened (read-only)	\??\G:	winlog.exe
File opened (read-only)	\??\H:	winlog.exe
File opened (read-only)	\??\Q:	winlog.exe
File opened (read-only)	\??\X:	winlog.exe
File opened (read-only)	\??\Y:	winlog.exe
File opened (read-only)	\??\Z:	winlog.exe
File opened (read-only)	\??\E:	winlog.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1552 set thread context of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 332 set thread context of 1332	332	winlog.exe	28

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe
332	winlog.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1552 wrote to memory of 1748	1552	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	26
PID 1748 wrote to memory of 332	1748	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	27
PID 1748 wrote to memory of 332	1748	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	27
PID 1748 wrote to memory of 332	1748	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	27
PID 1748 wrote to memory of 332	1748	b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe	27
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28
PID 332 wrote to memory of 1332	332	winlog.exe	28

C:\Users\Admin\AppData\Local\Temp\b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe
"C:\Users\Admin\AppData\Local\Temp\b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Users\Admin\AppData\Local\Temp\b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe
  C:\Users\Admin\AppData\Local\Temp\b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e.exe
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Users\Admin\AppData\Roaming\Microsoft\winlog.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\winlog.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:332
  - - C:\Users\Admin\AppData\Roaming\Microsoft\winlog.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\winlog.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Enumerates connected drives
      PID:1332

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

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\AppData\Roaming\Microsoft\winlog.exe

Filesize
216KB

MD5
56e194f08625e669fe2adf839a2d3c3e

SHA1
f1a175648979ff62915cb7bbc9748ce35ac7ce34

SHA256
b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e

SHA512
05668c29424929494e6f611edc3761efd686695c33da3221a25b924e834b68a535a5e66e7fd48c0bce052d7e010b43163fc7b775a1f91a4021b6637bba4ff3c6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winlog.exe

Filesize
216KB

MD5
56e194f08625e669fe2adf839a2d3c3e

SHA1
f1a175648979ff62915cb7bbc9748ce35ac7ce34

SHA256
b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e

SHA512
05668c29424929494e6f611edc3761efd686695c33da3221a25b924e834b68a535a5e66e7fd48c0bce052d7e010b43163fc7b775a1f91a4021b6637bba4ff3c6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\winlog.exe

Filesize
216KB

MD5
56e194f08625e669fe2adf839a2d3c3e

SHA1
f1a175648979ff62915cb7bbc9748ce35ac7ce34

SHA256
b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e

SHA512
05668c29424929494e6f611edc3761efd686695c33da3221a25b924e834b68a535a5e66e7fd48c0bce052d7e010b43163fc7b775a1f91a4021b6637bba4ff3c6

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\winlog.exe

Filesize
216KB

MD5
56e194f08625e669fe2adf839a2d3c3e

SHA1
f1a175648979ff62915cb7bbc9748ce35ac7ce34

SHA256
b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e

SHA512
05668c29424929494e6f611edc3761efd686695c33da3221a25b924e834b68a535a5e66e7fd48c0bce052d7e010b43163fc7b775a1f91a4021b6637bba4ff3c6

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\winlog.exe

Filesize
216KB

MD5
56e194f08625e669fe2adf839a2d3c3e

SHA1
f1a175648979ff62915cb7bbc9748ce35ac7ce34

SHA256
b2265cf131901f3f2553023b29ececa0927ea71e283bb4976883045bd1b5a96e

SHA512
05668c29424929494e6f611edc3761efd686695c33da3221a25b924e834b68a535a5e66e7fd48c0bce052d7e010b43163fc7b775a1f91a4021b6637bba4ff3c6

Download Submit
memory/1332-98-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1332-97-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1332-96-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-63-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-71-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-72-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-70-0x0000000075681000-0x0000000075683000-memory.dmp

Filesize
8KB

Download
memory/1748-69-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-65-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-67-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-56-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-62-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-60-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-59-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1748-57-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download