65739ac1088e29f121425be2e6dc6692ea6f2c05162e649415ba8e9130c0a5cb

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 03:24

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General

Target

2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe
Size

43KB
MD5

0d1d2f926be4deaf267d9305a753c68a
SHA1

217cfc70a3fbf485c2d953f194b37361b403d145
SHA256

65739ac1088e29f121425be2e6dc6692ea6f2c05162e649415ba8e9130c0a5cb
SHA512

0d990161abcbcc7c99d2ed059622ad96e991118b248d3886549423c4918628842aba37f57e01aba1ddeaffa66cd34d251486b7c664361d6cd321e6c21e45bf7d
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIz:bm74zYcgT/Ekn0ryfj/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/628-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326c-13.dat	CryptoLocker_rule2
behavioral2/memory/628-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/564-26-0x0000000008000000-0x000000000800D000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
564	hasfj.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 628 wrote to memory of 564	628	2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe	91
PID 628 wrote to memory of 564	628	2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe	91
PID 628 wrote to memory of 564	628	2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_0d1d2f926be4deaf267d9305a753c68a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:564

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4048 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:3244

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
d88f42ef99059e3f7a64c143b5dfe6f6

SHA1
334389c9c8249b6b38f30255fabeb7c1717f6aba

SHA256
665d7800318074135cf37dde5a73b01a45af47e20bc985427aa8bb73c16d04d9

SHA512
58eb06c585fd50592de82373979d3f6d2c92626f06bfcce1ab644e92062211b1251561fcf5264580a83b4a3b9c538343c0a0a3b9684ec2675921d34f55b8b87d

Download Submit
memory/564-19-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/564-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/564-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/628-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/628-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/628-2-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/628-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/628-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download