2d87d21fb933a54d6a05c3454e36954fcad981939b9c2c1e8133ef5d9fae3f4d

Analysis

max time kernel
146s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 05:25

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General

Target

2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe
Size

81KB
MD5

0872d3f606639cc8e4e0c91ae3eb6a4f
SHA1

fa529a855a4cec465e1d67452369a7340c4f1b4e
SHA256

2d87d21fb933a54d6a05c3454e36954fcad981939b9c2c1e8133ef5d9fae3f4d
SHA512

2abce2c5ef58435cb8a67f3e436cda128276655bf9441297abfc96f5c6e5fcdf86a5bc2c15f3fa97817aeb11533e2529fadcbbbb60c3f8facd8b6f85a3a50a0c
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrKM:TCjsIOtEvwDpj5HE/OUHnSMn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3844-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002322e-13.dat	CryptoLocker_rule2
behavioral2/memory/3844-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3328-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3844-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002322e-13.dat	CryptoLocker_set1
behavioral2/memory/3844-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3328-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3328	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 3844 wrote to memory of 3328	3844	2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe	90
PID 3844 wrote to memory of 3328	3844	2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe	90
PID 3844 wrote to memory of 3328	3844	2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_0872d3f606639cc8e4e0c91ae3eb6a4f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3844
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3328

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
81KB

MD5
69cff08a475fb8486b92d37380a47120

SHA1
2b007937f046469f5f659fd1af8c3dcf96e8cbbd

SHA256
acacfa227b28a3a8c8fa16c948e7826dee78f9541d9f8b849f7ac6811d8c9ae2

SHA512
e7fd4b7a2eeeb4e58c16e9dbc344a94307febca5ea37e8cff95d32d81b96d38f773123291882d2fb583ccc5a7776144732f1df416b4a415db6efd62bfcfcc368

Download Submit
memory/3328-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3328-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3328-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3844-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3844-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3844-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3844-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3844-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download