6f2bee81bb95993b7eec58278c00e3233ebfe7d417cd0cc19ccd65ace5966236

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 00:51

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General

Target

2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe
Size

43KB
MD5

bdc8ea56fe31aab00e4186b266a3378d
SHA1

b76a0655f11b944bfb405f26da4d47834ef86a09
SHA256

6f2bee81bb95993b7eec58278c00e3233ebfe7d417cd0cc19ccd65ace5966236
SHA512

c05e63f00a4f330790df580725d563c76f44f28cfc914e31f9b0d8f0c53975e58f3f47ac14d28939b936de3e69be4b396b8be624bd545c83aaf5d340ed72d19a
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtA9:bCDOw9aMDooc+vA9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2748-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233c1-12.dat	CryptoLocker_rule2
behavioral2/memory/2748-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4472-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4472-27-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4472	lossy.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 2748 wrote to memory of 4472	2748	2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe	82
PID 2748 wrote to memory of 4472	2748	2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe	82
PID 2748 wrote to memory of 4472	2748	2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_bdc8ea56fe31aab00e4186b266a3378d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4472

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\lossy.exe

Filesize
43KB

MD5
9512eb73add03ecc50fd5e3839df5f8d

SHA1
786b34e606d1dd7433cf9bba4da13ea1b190f72b

SHA256
07fab0f7f90dea11f89ba8c8eeecc179e17a406e82628532e8949e68bb2019df

SHA512
15af8be84abc9b49446bd57314beb689c80f2d548108c9c53cfa2ca36a1cbc6d70c954d387629ea2fd19e2f0a7e35c07a7f528ce04882552ae923409938db886

Download Submit
memory/2748-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2748-1-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/2748-9-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/2748-2-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/2748-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4472-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4472-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4472-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4472-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download