5f1c0d2166bb1baafbf5457e42c93bacfc061380d6dcc68fa8e9e4c57aa764a4

Analysis

max time kernel
138s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2024 03:27

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General

Target

2024-01-26_53133495762830ee232630798cded940_cryptolocker.exe
Size

60KB
MD5

53133495762830ee232630798cded940
SHA1

9a6def36ca860003d74feeca17247a40480f6a3f
SHA256

5f1c0d2166bb1baafbf5457e42c93bacfc061380d6dcc68fa8e9e4c57aa764a4
SHA512

55b18dc864eb588cfe3d795e6db07677fdd47bdf8aafa1e292f710a91aa476fbfdc07a673e9c495571c68a08c039f0b84bb8d67bd0b6fc5e0645680065b23f78
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPJ:TCjsIOtEvwDpj5HE/OUHnSMY2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4928-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4928-10-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000022480-14.dat	CryptoLocker_rule2
behavioral2/memory/4868-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4928-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4928-10-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000022480-14.dat	CryptoLocker_set1
behavioral2/memory/4868-54-0x0000000000500000-0x000000000050E000-memory.dmp	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	2024-01-26_53133495762830ee232630798cded940_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
4868	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 4928 wrote to memory of 4868	4928	2024-01-26_53133495762830ee232630798cded940_cryptolocker.exe	90
PID 4928 wrote to memory of 4868	4928	2024-01-26_53133495762830ee232630798cded940_cryptolocker.exe	90
PID 4928 wrote to memory of 4868	4928	2024-01-26_53133495762830ee232630798cded940_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-01-26_53133495762830ee232630798cded940_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_53133495762830ee232630798cded940_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4928
- 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:4868

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
60KB

MD5
69eaf7672df21e99709cc92f731a6946

SHA1
0b4f942b3f3d8ecf291c47924df41a31395a2d30

SHA256
636349453cded01bdf32edc179d45792a2ee5c490a3a48ebace8bcdcfc290fa8

SHA512
74717c45c01777e87dea89421670d4694e0943ed65e2824125afc221862743466b14c4371c97dd7ace219d1646299041f5edea30860ce297a482f4fa51ed2193

Download Submit
memory/4868-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4868-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4868-54-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4928-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4928-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4928-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4928-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4928-10-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download