e6d12818cb38c8fdb271f029d821348bb65a09995f01be6cfb766919558c12e8

Analysis

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

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/06/2024, 23:37

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General

Target

2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe
Size

53KB
MD5

d3792ed7d6303d1a90eea5ff26030031
SHA1

219457a7bc889ed8f9e8f0babfc17462a1e91722
SHA256

e6d12818cb38c8fdb271f029d821348bb65a09995f01be6cfb766919558c12e8
SHA512

90a2a65d4c06e81733ee9a2d4b928c39bf4d6d7452849ff01948075ea35bdc772851a6a940eaec843a7d110daeb4ca1f8edacfd48a480f8c28e74365ad221bcd
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOT1:bODOw9acifAoc+vi1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2172-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/3376-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2172-17-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3376-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2172-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x0008000000022f51-13.dat	UPX
behavioral2/memory/3376-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/2172-17-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/3376-27-0x0000000008000000-0x000000000800F000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3376	lossy.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2172-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x0008000000022f51-13.dat	upx
behavioral2/memory/3376-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/2172-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3376-27-0x0000000008000000-0x000000000800F000-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 2172 wrote to memory of 3376	2172	2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe	81
PID 2172 wrote to memory of 3376	2172	2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe	81
PID 2172 wrote to memory of 3376	2172	2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_d3792ed7d6303d1a90eea5ff26030031_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3376

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
53KB

MD5
3eb9da470d0c91555f1b1c10ec991450

SHA1
e602eb06bb9b0732a438fd4e5c7b3530d020fd0c

SHA256
7cc208826ff4fc449d2095ab11d4a78e8c4cb5099f3288a227c981f650e15971

SHA512
14f580f08dfe644118bb80dcd43205e0562f5339002d6f141303df81f2cac4ab2a262d45f50f2cb6b90dda79d9d020b3c3ba080bc7433c8f3ab25f462bb4d154

Download Submit
memory/2172-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2172-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2172-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2172-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2172-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3376-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3376-20-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3376-22-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3376-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download