329dfbe138cdbaf7b750c3310f3e3384446c8130f061baf7d8ff18f1c39e5aed

Analysis

max time kernel
149s
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
19/02/2024, 16:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe
Size

91KB
MD5

600442feb483bad91f3142e381ef1a1a
SHA1

bf9db6fac5bfc98291202cf53ea9b474e99b9017
SHA256

329dfbe138cdbaf7b750c3310f3e3384446c8130f061baf7d8ff18f1c39e5aed
SHA512

531f3c4212d1b48c3dc1e9d14d4e1aa10f83cdb773759e46d021cf327120c4e242a79d7d6305f48bb6f2e1d5e5a4f0f2e80a8c3a21105f1ea20b5520d78988fe
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRMy87UvK:zCsanOtEvwDpjP

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4984-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_set1
behavioral2/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4984-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002320a-13.dat	UPX
behavioral2/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4984-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4984	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000700000002320a-13.dat	upx
behavioral2/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4984-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2700 wrote to memory of 4984	2700	2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe	84
PID 2700 wrote to memory of 4984	2700	2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe	84
PID 2700 wrote to memory of 4984	2700	2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_600442feb483bad91f3142e381ef1a1a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4984

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\misid.exe

Filesize
91KB

MD5
1c965ebdaa11733473e53d6bc450dfa7

SHA1
568c8eb2cdba65e95e49adbc60c375781a687b4a

SHA256
9754c1b70d4aadf2e8b6cbd195eb494ac7cc5363abc7cd8c6537ba1b962897e7

SHA512
72cdc8e4b1b55795f3401c253e27dd5a0a521f12681bb50aac2f88fd9365e42d9c4a826c910471be1878113a4f7a46118027c30011ced8da8677a615309edb10

Download Submit
memory/2700-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2700-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2700-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2700-3-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4984-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4984-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4984-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download