341cb20dbeb83339f0ee3fd95cab65eee7541797c0926b1c9560001a4cf92143

Analysis

max time kernel
149s
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
08/03/2024, 02:36

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General

Target

2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe
Size

57KB
MD5

44f0a9f911a2c79e3638da37db916003
SHA1

a1df4e73c09e67d1cb9b9219b207da5b93c6d569
SHA256

341cb20dbeb83339f0ee3fd95cab65eee7541797c0926b1c9560001a4cf92143
SHA512

2e08ddc7f4488c2c6526f2984cccde743d33c9579b136eb841c2a7810543ed3ef85f682343461ee9ab0520be4955385d56c5136f574e9f8a2f9bf4f4dbf59b57
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFwEt:xj+VGMOtEvwDpjubEgywEt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/4492-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/464-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/4492-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/464-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000400000001e980-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4492-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/464-26-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
464	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 4492 wrote to memory of 464	4492	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	89
PID 4492 wrote to memory of 464	4492	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	89
PID 4492 wrote to memory of 464	4492	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:464

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
57KB

MD5
b3f89404d227eb10f0790e9f1fc50d8c

SHA1
f3833b7b665a8916c7d47adc475882225dc1c7a7

SHA256
8c26faeea8a3d0fa46940afa175f275a309cc0412aad8f7a10a8e9acf2206f72

SHA512
018503ab337c1a62a460b1fba7e4ebe8e6cdfeed63bf81b5ddecc27d85f5fe257d312495cfac108a6b593c1fb7b4fd4888df24324cf7bd8f6ade097e1cca73d3

Download Submit
memory/464-19-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/464-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/464-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4492-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4492-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4492-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4492-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4492-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download