1e5e7bc329df8680574b729d17d77a146c354aa4d16f1f918a5d35969f888075

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 10:11

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General

Target

2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe
Size

39KB
MD5

97334c56cd185bfbebd92a2a4eaadb16
SHA1

1403b462e82e70ab4ba2f40bc102dd83ae410133
SHA256

1e5e7bc329df8680574b729d17d77a146c354aa4d16f1f918a5d35969f888075
SHA512

af67c146a9350750be299b0fd2d8b1e279e0aee6806d63502a918f9c7912bbe47027775b6400905f7fdb55e9ce31bf453590e0c12b06d13b95eee7870ad614f2
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmxT4Hme:bA6YcA/X6G0W1BGe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023b74-12.dat	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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5596	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 1248 wrote to memory of 5596	1248	2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe	85
PID 1248 wrote to memory of 5596	1248	2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe	85
PID 1248 wrote to memory of 5596	1248	2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_97334c56cd185bfbebd92a2a4eaadb16_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5596

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
40KB

MD5
a826190b9b90682fba6b42af049349a7

SHA1
e1c6b5f118afa05f8a25f242cacfdbdf191697b3

SHA256
eb8fd65a22f3ce2da3b81d133e45b21e1ca9acf635161b7f3b57ad32cd3d91bd

SHA512
61e65924f34bde90d7099ddeffcf069998ed54d0aa331ac327ade83fa0907cb25c0f5880efdca404397a5972cc6db960f103bdde99432897bc97464c1ff9379a

Download Submit
memory/1248-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1248-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1248-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5596-17-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/5596-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download