8e6ab3fa1fd0a8bcef6b042cd9f0120847180ec1e57b10c28336ace670470e22

General

Target

8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe
Size

1.2MB
MD5

9b3e86fa835cd63b5887f4c51b786493
SHA1

d4d148b65a1fe525527772f2f51b41e43281fe40
SHA256

8e6ab3fa1fd0a8bcef6b042cd9f0120847180ec1e57b10c28336ace670470e22
SHA512

9050f7976a5ce61600ea4e2e83cfaea9aec43f28cc5a843062dd5fb0d2b2bf0b6c35ec22387b066e453790dd7c9c1e7e3f2b4f2d225c18fec65979d438629bce

Score

9^/10

persistence upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000023164-130.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
4768	yy.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000023164-130.dat	upx

Loads dropped DLL 1 IoCs

pid	Process
3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	yy.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\245CE7AD = "C:\\Windows\\245CE7AD\\svchsot.exe"	yy.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\SysWOW64\yy.exe	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe
File opened for modification	C:\WINDOWS\SysWOW64\yy.exe	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	yy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	yy.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4768	yy.exe
4768	yy.exe
4768	yy.exe
4768	yy.exe
4768	yy.exe
4768	yy.exe
4768	yy.exe
4768	yy.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4768	yy.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe
3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe
3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe
3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3976 wrote to memory of 4768	3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe	81
PID 3976 wrote to memory of 4768	3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe	81
PID 3976 wrote to memory of 4768	3976	8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe	81
PID 4768 wrote to memory of 2992	4768	yy.exe	82
PID 4768 wrote to memory of 2992	4768	yy.exe	82
PID 4768 wrote to memory of 2992	4768	yy.exe	82
PID 2992 wrote to memory of 852	2992	net.exe	84
PID 2992 wrote to memory of 852	2992	net.exe	84
PID 2992 wrote to memory of 852	2992	net.exe	84

C:\Users\Admin\AppData\Local\Temp\8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe
"C:\Users\Admin\AppData\Local\Temp\8E6AB3FA1FD0A8BCEF6B042CD9F0120847180EC1E57B1.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3976
- C:\WINDOWS\SysWOW64\yy.exe
  C:\WINDOWS\system32\yy.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4768
- - C:\WINDOWS\SysWOW64\net.exe
    net start "Task Scheduler"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start "Task Scheduler"
      4⤵
      PID:852

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

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\jedata.dll

Filesize
86KB

MD5
114054313070472cd1a6d7d28f7c5002

SHA1
9a044986e6101df1a126035da7326a50c3fe9a23

SHA256
e15d9e1b772fed3db19e67b8d54533d1a2d46a37f8b12702a5892c6b886e9db1

SHA512
a2ff8481e89698dae4a1c83404105093472e384d7a3debbd7014e010543e08efc8ebb3f67c8a4ce09029e6b2a8fb7779bb402aae7c9987e61389cd8a72c73522

Download Submit
C:\WINDOWS\SysWOW64\yy.exe

Filesize
80KB

MD5
a2f279b5cdcb5d71e34e7f71267daa56

SHA1
f151f51d6cfba9ecddcf5c400ad4ecafd743a4c8

SHA256
f0e70fe2753e6c1d9b53060c93a5a35fcde1f3591c2750096c3ee0b4ca0f2b6b

SHA512
cac936b09306f0e2e275edc7529d0832da8e67edaa094a8b6dcb7c350676fe031566dc2e05155a01ce9c18e7c4337b6997bd606fb6ede3361789d7320b6f383e

Download Submit
C:\Windows\SysWOW64\yy.exe

Filesize
80KB

MD5
a2f279b5cdcb5d71e34e7f71267daa56

SHA1
f151f51d6cfba9ecddcf5c400ad4ecafd743a4c8

SHA256
f0e70fe2753e6c1d9b53060c93a5a35fcde1f3591c2750096c3ee0b4ca0f2b6b

SHA512
cac936b09306f0e2e275edc7529d0832da8e67edaa094a8b6dcb7c350676fe031566dc2e05155a01ce9c18e7c4337b6997bd606fb6ede3361789d7320b6f383e

Download Submit
memory/4768-134-0x0000000010000000-0x0000000010046000-memory.dmp

Filesize
280KB

Download
memory/4768-136-0x0000000010000000-0x0000000010046000-memory.dmp

Filesize
280KB

Download
memory/4768-137-0x0000000010000000-0x0000000010046000-memory.dmp

Filesize
280KB

Download
memory/4768-138-0x0000000010000000-0x0000000010046000-memory.dmp

Filesize
280KB

Download

Analysis

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