043f5701fe83eb223229af5650754980b6130940a74f30c1bdada3a42f19985c

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
21/10/2023, 17:41

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General

Target

NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe
Size

2.8MB
MD5

c92f16d48d64bac81700e68374315bd0
SHA1

42d8940d93de2b7157134508e2e59c10648b8102
SHA256

043f5701fe83eb223229af5650754980b6130940a74f30c1bdada3a42f19985c
SHA512

82d22d78be5f3d573c293dd6b39376cadfb6bbdc4f639c3c2fc45baced812d2996a74c623ad25bab3fb62e4fe90b2392a5649d66975d127ad7e78f5356f51099
SSDEEP

49152:Z0rLf0ZwHakjEsjtoG1q8AMz8DOXTDGWUaTw:Zof0ZhkXjtoGlAMz8DqTD9Ua

Score

7^/10

Malware Config

Signatures

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-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000_Classes\Local Settings	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4372	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe
2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe
2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe
2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe
2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 4372	2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe	90
PID 2540 wrote to memory of 4372	2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe	90
PID 2540 wrote to memory of 4372	2540	NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe	90

C:\Users\Admin\AppData\Local\Temp\NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.c92f16d48d64bac81700e68374315bd0_JC.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\error.log
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:4372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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\AppData\Local\Temp\error.log

Filesize
9KB

MD5
c52821a39fd9f9d7a55b7f89ba490f59

SHA1
d5ebc58cab1ddf8821a97eef77b813e45bebc005

SHA256
fe6548267b6ca20ff4101f9369096c5b04f3bc939ef479a14f59dedee5d9d3a1

SHA512
5f99f9d97752f31553c91797823fd9374aa964a901e8dd8c78ad85dd5ef9c7a2404404ad837f29589dc818313b4998916a48b154e9974b4d692ca3476b026349

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