5b170118b86bcffa702e9859f12bd437e64c5ef3f83e1adf61d1ee52a0163298

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 18:58

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General

Target

2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe
Size

49KB
MD5

8c5bc213c8988328ac42906fffacbbb4
SHA1

f35c65b1d1edfa07ae0f4148b58512b8ee14308e
SHA256

5b170118b86bcffa702e9859f12bd437e64c5ef3f83e1adf61d1ee52a0163298
SHA512

72c4a5e9f59383c2e1c91ac164bb68e78d10c57df656a74a1281b77c93dd799b659eacdfb5c34e2f70f6a82d4705d6e75fdc51883ec003e3627c60ee4b27c7e7
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6ddcsF:bgGYcA/53GAA6y37Q6ddN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000224e9-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3284	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 4580 wrote to memory of 3284	4580	2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe	87
PID 4580 wrote to memory of 3284	4580	2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe	87
PID 4580 wrote to memory of 3284	4580	2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_8c5bc213c8988328ac42906fffacbbb4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3284

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
49KB

MD5
5cdb0ca8fd5b16300cbd6229687f5528

SHA1
a4024d8fd5fe86b62d4c9b71c3e07eb8f54f74fb

SHA256
7d6b86fce34ef30d3c182bbe8990262b8ba2885043443ae2e89d01afa7189c9d

SHA512
5710a1fe09fbc3da9795c3889f6a1ab32e3bba661ffaa5f17d0d4dc7eff9f72307ef6b925d0b2ff5a299350569e73d8191a8579115ebe779ed2ed485e580afb3

Download Submit
memory/3284-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3284-19-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/4580-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4580-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4580-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download