b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 02:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe
Size

39KB
MD5

6eb292a566dbb3f17f8afe31aa2eb748
SHA1

2551636f4eeac900f2e66eb31e5e7f8fffda94bf
SHA256

b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe
SHA512

ec3dfb5647bdf837a7208f27808bf39469383e1ad4b64e19679b53ac717e814780f84c9df412fad17b0b01ccc9db49fc4a33b71215caa64d4c77c02d1e799dae
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3Hw2Ag:bA6YcA/X6G0W143Qlg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233fa-12.dat	CryptoLocker_rule2

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-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation	b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe

Executes dropped EXE 1 IoCs

pid	Process
1176	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 1176	2796	b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe	86
PID 2796 wrote to memory of 1176	2796	b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe	86
PID 2796 wrote to memory of 1176	2796	b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe	86

C:\Users\Admin\AppData\Local\Temp\b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe
"C:\Users\Admin\AppData\Local\Temp\b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1176

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

Loading Replay Monitor...

Downloads

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

Filesize
39KB

MD5
c0020901949696b7799e4c020e0bb254

SHA1
284d8d1ee8c509495d3dfba70c7e48f33a48dc12

SHA256
0f7b64723d2add7263dfe546da975886ad9895dd56452061f3540d8cf0f346da

SHA512
e8fe31d996f7c834c8b6c46a388409dfd959cdb13c0ac16453b068194fed8f479f3a2bcce98c24628cd27c3cee555f4d8355a7a880ed558ef925565de5c212aa

Download Submit
memory/1176-19-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2796-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/2796-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/2796-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download