461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5

General

Target

461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe
Size

2.6MB
MD5

8547c878787692870f6cb73ac772c4e6
SHA1

ae44b0581d5c3bee317873cbf0e23044d45eac62
SHA256

461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5
SHA512

3c0528e914aa2c54bc2dc1f6c9ad71e10eb18c228be8ac77eabbfb71beaf277f4df8582fa491ab53631c20d220b644054646a2a8cc18073c2c5aea293617dd86
SSDEEP

49152:G+pw97HhY6Hk009aeWyGitBdxPBJjXlapqwnLTWmOpQw1VW5qDASDTu5SZbNUI3L:GaQB3EVaLitBd14ptLTKMARyYkIL

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
892	hkcmd.exe
872	Best Fosil Bot 1875.01.exe

Loads dropped DLL 4 IoCs

pid	Process
756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe
756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe
756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe
756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.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-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run	hkcmd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\hkcmd = "\"C:\\Users\\Admin\\AppData\\Local\\hkcmd.exe\" /background"	hkcmd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 756 set thread context of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.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 1 IoCs

pid	Process
872	Best Fosil Bot 1875.01.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 756 wrote to memory of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	28
PID 756 wrote to memory of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	28
PID 756 wrote to memory of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	28
PID 756 wrote to memory of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	28
PID 756 wrote to memory of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	28
PID 756 wrote to memory of 892	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	28
PID 756 wrote to memory of 872	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	29
PID 756 wrote to memory of 872	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	29
PID 756 wrote to memory of 872	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	29
PID 756 wrote to memory of 872	756	461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe	29

C:\Users\Admin\AppData\Local\Temp\461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe
"C:\Users\Admin\AppData\Local\Temp\461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:756
- C:\Users\Admin\AppData\Local\hkcmd.exe
  "C:\Users\Admin\AppData\Local\hkcmd.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:892
- C:\Users\Admin\AppData\Local\Best Fosil Bot 1875.01.exe
  "C:\Users\Admin\AppData\Local\Best Fosil Bot 1875.01.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:872

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Best Fosil Bot 1875.01.exe

Filesize
440KB

MD5
633875fc24ecb543bb57a0524d7de85b

SHA1
cea2629133688eb228f5268a7851ff22a5b5fb46

SHA256
6a2c0e3ab4dbf9664da49a0ca133441bdc5d1f8b5bfaa5ab363607af5cab3386

SHA512
cd656e1302d78a8119ff2ed568fbefca797ed4905520bf235e3241c113b2510f672e06ec749af54415bbd1be5e06a4fed56a8941f61ec1b716a16bc334e17faa

Download Submit
C:\Users\Admin\AppData\Local\hkcmd.exe

Filesize
2.6MB

MD5
8547c878787692870f6cb73ac772c4e6

SHA1
ae44b0581d5c3bee317873cbf0e23044d45eac62

SHA256
461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5

SHA512
3c0528e914aa2c54bc2dc1f6c9ad71e10eb18c228be8ac77eabbfb71beaf277f4df8582fa491ab53631c20d220b644054646a2a8cc18073c2c5aea293617dd86

Download Submit
\Users\Admin\AppData\Local\Best Fosil Bot 1875.01.exe

Filesize
440KB

MD5
633875fc24ecb543bb57a0524d7de85b

SHA1
cea2629133688eb228f5268a7851ff22a5b5fb46

SHA256
6a2c0e3ab4dbf9664da49a0ca133441bdc5d1f8b5bfaa5ab363607af5cab3386

SHA512
cd656e1302d78a8119ff2ed568fbefca797ed4905520bf235e3241c113b2510f672e06ec749af54415bbd1be5e06a4fed56a8941f61ec1b716a16bc334e17faa

Download Submit
\Users\Admin\AppData\Local\Best Fosil Bot 1875.01.exe

Filesize
440KB

MD5
633875fc24ecb543bb57a0524d7de85b

SHA1
cea2629133688eb228f5268a7851ff22a5b5fb46

SHA256
6a2c0e3ab4dbf9664da49a0ca133441bdc5d1f8b5bfaa5ab363607af5cab3386

SHA512
cd656e1302d78a8119ff2ed568fbefca797ed4905520bf235e3241c113b2510f672e06ec749af54415bbd1be5e06a4fed56a8941f61ec1b716a16bc334e17faa

Download Submit
\Users\Admin\AppData\Local\hkcmd.exe

Filesize
2.6MB

MD5
8547c878787692870f6cb73ac772c4e6

SHA1
ae44b0581d5c3bee317873cbf0e23044d45eac62

SHA256
461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5

SHA512
3c0528e914aa2c54bc2dc1f6c9ad71e10eb18c228be8ac77eabbfb71beaf277f4df8582fa491ab53631c20d220b644054646a2a8cc18073c2c5aea293617dd86

Download Submit
\Users\Admin\AppData\Local\hkcmd.exe

Filesize
2.6MB

MD5
8547c878787692870f6cb73ac772c4e6

SHA1
ae44b0581d5c3bee317873cbf0e23044d45eac62

SHA256
461f80a7835f6660005e184ceae6df4fa24807836ea4c355182e312131c326c5

SHA512
3c0528e914aa2c54bc2dc1f6c9ad71e10eb18c228be8ac77eabbfb71beaf277f4df8582fa491ab53631c20d220b644054646a2a8cc18073c2c5aea293617dd86

Download Submit
memory/756-54-0x0000000074E61000-0x0000000074E63000-memory.dmp

Filesize
8KB

Download
memory/892-62-0x0000000000400000-0x0000000000556000-memory.dmp

Filesize
1.3MB

Download
memory/892-64-0x0000000000400000-0x0000000000556000-memory.dmp

Filesize
1.3MB

Download
memory/892-65-0x0000000000400000-0x0000000000556000-memory.dmp

Filesize
1.3MB

Download
memory/892-66-0x0000000000400000-0x0000000000556000-memory.dmp

Filesize
1.3MB

Download
memory/892-59-0x0000000000400000-0x0000000000556000-memory.dmp

Filesize
1.3MB

Download
memory/892-57-0x0000000000400000-0x0000000000556000-memory.dmp

Filesize
1.3MB

Download

Analysis

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