b2b3cfecd0350ca1a54b570649eb53c8e08515154ff5b6ab5f28d1371565ef7c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 19:46

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General

Target

2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe
Size

386KB
MD5

2ff03f9931c6a92b7a678b0491815efb
SHA1

3824da0c16f68b2e5e0879b4defb7788b412386c
SHA256

b2b3cfecd0350ca1a54b570649eb53c8e08515154ff5b6ab5f28d1371565ef7c
SHA512

32429a196259cbca944f7fea006d10caabacf39a16c12e75df06b73eae72f1eb4559811b2352e1a5fe84edae34482c98b17263f2b13e3bcf29debf7ebe60e7ae
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXG:nnOflT/ZFIjBz3xjTxynGUOUhXG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023138-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4500	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 5028 wrote to memory of 4500	5028	2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe	84
PID 5028 wrote to memory of 4500	5028	2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe	84
PID 5028 wrote to memory of 4500	5028	2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_2ff03f9931c6a92b7a678b0491815efb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5028
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4500

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
387KB

MD5
c33a5a390da1825c4487746091196f9c

SHA1
504beb90d9dd3c0e561ba2221d29702dbba27bdf

SHA256
449b21c3cf2e2f71a8067544f8ca991233d36c3c6c3ae9b08df656d80270a8b8

SHA512
7916a3a56851636d46877e7e839f4db843784001e7c6c2b7b1976afc031015431ae5a459f865ffd31fb041d63d16e7c307c6a191c1cf183bace803cf2ce54df2

Download Submit
memory/4500-17-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4500-21-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/5028-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5028-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5028-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download