6d1a996a1eb9d3bcb87479e3f7a1cce4b1b4bdc00bfd36a4e9dd46ec980dd813

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
16/06/2024, 14:29

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General

Target

2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe
Size

43KB
MD5

66d6e2db69d9639d45f1189eb1e603ed
SHA1

640fb0773b0d720c6e25ff83cde2b0d1dcc1b7c8
SHA256

6d1a996a1eb9d3bcb87479e3f7a1cce4b1b4bdc00bfd36a4e9dd46ec980dd813
SHA512

95ff9cd31b0a290410cdd293715f040e266223736633848901d45e0781b07d4db39057432714a58c7fa242608154b9e98544abb51c9ad7af860ac32c04d82fcf
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKo3v:ba6YcA/Xk3wXFXSqAJCv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000233d6-13.dat	CryptoLocker_rule2
behavioral2/memory/1144-17-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4920-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4920-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x00070000000233d6-13.dat	UPX
behavioral2/memory/1144-17-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/4920-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/4920-27-0x0000000008000000-0x000000000800F000-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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00070000000233d6-13.dat	upx
behavioral2/memory/1144-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4920-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4920-27-0x0000000008000000-0x000000000800F000-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 1144 wrote to memory of 4920	1144	2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe	83
PID 1144 wrote to memory of 4920	1144	2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe	83
PID 1144 wrote to memory of 4920	1144	2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_66d6e2db69d9639d45f1189eb1e603ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4920

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\hasfj.exe

Filesize
43KB

MD5
e36e11f3faa350018f3de8fbcfa54a16

SHA1
76521194713976c49afcf9d35a0b6eddfdc796c7

SHA256
a81b7069090345b393995def2af0b835ea50335e21259613bf2e8511038063e6

SHA512
9149ea59950acbfd4dc128eebe61239f82a4aeaa1f81d471ebe490bd6298c00fe1ba165dd8ba5f62c8b5c91ee9875b4841aed96cb5f90955dac1a0d5054dba33

Download Submit
memory/1144-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1144-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1144-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1144-9-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1144-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4920-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4920-20-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4920-26-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4920-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download