d2e3c6919b368b87382e525ebd5da7796b272b91d326a44848522fefe015be7c

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 04:17

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General

Target

2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe
Size

54KB
MD5

b04021a4f695e7b19afc62d681b671c4
SHA1

86788e2cee871f9ae98de6c0b12e1c4103185616
SHA256

d2e3c6919b368b87382e525ebd5da7796b272b91d326a44848522fefe015be7c
SHA512

e9eb875d6ebd3678cfae07dd8186f1fde591a998867a57c09164f194fa395ecbef5fc2255667e913d3734e899ace3aa8fb5703da3c74d559ad08a0380c0e1797
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOka4:z6QFElP6n+gKmddpMOtEvwDpj31ikv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2116-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0005000000023276-13.dat	CryptoLocker_rule2
behavioral2/memory/2116-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4464-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2116-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0005000000023276-13.dat	CryptoLocker_set1
behavioral2/memory/2116-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4464-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2116-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0005000000023276-13.dat	UPX
behavioral2/memory/2116-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4464-25-0x0000000000500000-0x0000000000510000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4464	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2116-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0005000000023276-13.dat	upx
behavioral2/memory/2116-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4464-25-0x0000000000500000-0x0000000000510000-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 2116 wrote to memory of 4464	2116	2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe	85
PID 2116 wrote to memory of 4464	2116	2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe	85
PID 2116 wrote to memory of 4464	2116	2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_b04021a4f695e7b19afc62d681b671c4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4464

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
55KB

MD5
37ab9feece510d9e26de92e241c89fd3

SHA1
6b82e207c2dd50d22f0589c9a13bab7b8793ef8a

SHA256
d0ada2d5aa94ea2c4e62333e0a095801c1a7d70fe2af431ed4528111456f40a9

SHA512
e3c64b81029ef3f08d61185d141443550ea7dfcfc268c625fc63e3b4fe013a37ac4e8980956db44072a6d2d61c70155770ffe735d8d575e85d8b8769bfaf1af9

Download Submit
memory/2116-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2116-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2116-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2116-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2116-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4464-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4464-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download