1fda92611d7b6e21422aacef85b0db4c86dc6eff9a7c43e60bb72754f2cfec25

Analysis

max time kernel
140s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2024 03:27

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General

Target

2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe
Size

127KB
MD5

410b55e9a5caefde8b1975d0c4fea592
SHA1

fb07a5d059b457cd90974a6051cd742297e291e9
SHA256

1fda92611d7b6e21422aacef85b0db4c86dc6eff9a7c43e60bb72754f2cfec25
SHA512

127354ef1f8f748f65154cb162e7ea4c62efdeaba698634e930baaa0c4ddc30c80a71422e159f74b06a737c80f2eae427f06355ab5b33214000ed3ab05171544
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//jx:vCjsIOtEvwDpj5H9YvQd2Rr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023126-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023126-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
864	misid.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 3960 wrote to memory of 864	3960	2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe	84
PID 3960 wrote to memory of 864	3960	2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe	84
PID 3960 wrote to memory of 864	3960	2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_410b55e9a5caefde8b1975d0c4fea592_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:864

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\misid.exe

Filesize
127KB

MD5
7c077f4c71b7b17d54320052020fd82d

SHA1
667584e3127567836aa1b7d2bed9186012647a1b

SHA256
cd9b8fe69321bf49e4647736706a9544403099e8d64200e91e8f06f4a2987fac

SHA512
4824f6d193ad6cecec6f1af4dca201eb4da36038b2fc58211acec3f53bb74d0727defbf5ba63f8dae1dce4e71f2344a6e8bff19e55259643532e0d941a17bbaf

Download Submit
memory/864-18-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/864-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3960-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/3960-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/3960-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download