bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585

General

Target

bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe
Size

43KB
MD5

4928d60f00050b3afe71851a46ccdac0
SHA1

65f12d289fb2e769f48b3059d4d6e713a47a5a5f
SHA256

bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585
SHA512

a7d09369c1673c246456534dbb367a30c7406f46377bb188a3c733ce3ff932cf70b32a39e47ffe049a6d9ce14e8f7ceb2672b58419d8922f1bdc3482f556f862
SSDEEP

768:ZCjzJ8ytcXTSqiw/ir+9WTW2il5M1g6H7jHv2dqvtq1IYsL1uHCRUNmqAgHCCjPJ:ieWfJVXFWEYCRU3HCCrk

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4504	Windows.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3500	netsh.exe

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\55b3825ee39ada2fcddf7c7accbde69e.exe	Windows.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\55b3825ee39ada2fcddf7c7accbde69e.exe	Windows.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\55b3825ee39ada2fcddf7c7accbde69e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Windows.exe\" .."	Windows.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\55b3825ee39ada2fcddf7c7accbde69e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Windows.exe\" .."	Windows.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe
4504	Windows.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4504	Windows.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 4504	2128	bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe	81
PID 2128 wrote to memory of 4504	2128	bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe	81
PID 2128 wrote to memory of 4504	2128	bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe	81
PID 4504 wrote to memory of 3500	4504	Windows.exe	83
PID 4504 wrote to memory of 3500	4504	Windows.exe	83
PID 4504 wrote to memory of 3500	4504	Windows.exe	83

C:\Users\Admin\AppData\Local\Temp\bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe
"C:\Users\Admin\AppData\Local\Temp\bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\Windows.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Windows.exe" "Windows.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Windows.exe

Filesize
43KB

MD5
4928d60f00050b3afe71851a46ccdac0

SHA1
65f12d289fb2e769f48b3059d4d6e713a47a5a5f

SHA256
bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585

SHA512
a7d09369c1673c246456534dbb367a30c7406f46377bb188a3c733ce3ff932cf70b32a39e47ffe049a6d9ce14e8f7ceb2672b58419d8922f1bdc3482f556f862

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows.exe

Filesize
43KB

MD5
4928d60f00050b3afe71851a46ccdac0

SHA1
65f12d289fb2e769f48b3059d4d6e713a47a5a5f

SHA256
bcda0d7635c0922f6b3a2686a138e1bcd462c0312348a8751a0f5c8bd9aae585

SHA512
a7d09369c1673c246456534dbb367a30c7406f46377bb188a3c733ce3ff932cf70b32a39e47ffe049a6d9ce14e8f7ceb2672b58419d8922f1bdc3482f556f862

Download Submit
memory/2128-132-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/2128-136-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/3500-137-0x0000000000000000-mapping.dmp

Download
memory/4504-133-0x0000000000000000-mapping.dmp

Download
memory/4504-138-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4504-139-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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