e1fd023a790a88a0fc4d32d0f90c4f8bd35310da2de3f2e2298164be5269282d

Analysis

max time kernel
141s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 09:42

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General

Target

2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe
Size

82KB
MD5

a5d997dafbfd86a0431b70f5dc664612
SHA1

940b01592d843f1d089455ec66f4832eac28ed78
SHA256

e1fd023a790a88a0fc4d32d0f90c4f8bd35310da2de3f2e2298164be5269282d
SHA512

8d8b141f8c3426d2dd5a57fd53976b90c0ad0e2304911a142e3a41b39082308aa9c0bf6acf0fe573dbb3e02282322e729c058763d14c1d29d9fa7729f822ad96
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPne:V6QFElP6n+gMQMOtEvwDpjyaLccVNl0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023117-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023117-12.dat	CryptoLocker_set1

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3684	asih.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 496 wrote to memory of 3684	496	2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe	84
PID 496 wrote to memory of 3684	496	2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe	84
PID 496 wrote to memory of 3684	496	2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_a5d997dafbfd86a0431b70f5dc664612_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:496
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3684

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\asih.exe

Filesize
82KB

MD5
aba764067024d2e9693014686c0ca8dc

SHA1
f13e787dced522c50984360c503a77e5d212a516

SHA256
3d68357a93fc41890811110f135ca97f0673d11d22475b5977933eb54303b74f

SHA512
4c2734f7865d55ebbeb55261eb546bc7b05e72ce796ad5c5a2f46bba5f8d4277d7d0200dd2b41b79e940f7b1c3fc3f3103aabc06592669e886279ee21db954de

Download Submit
memory/496-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/496-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/496-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3684-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3684-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download