37175461f0fa34de0a3c5d511751344c49e1681878a6c8cdc0e68052d094ed47

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 17:04

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General

Target

2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe
Size

58KB
MD5

fbd0d68705ceb2511713125624a4d8e5
SHA1

3626f7f9cd9a0f83a17410eae79ee691549acf24
SHA256

37175461f0fa34de0a3c5d511751344c49e1681878a6c8cdc0e68052d094ed47
SHA512

cf78c8a5600d760dfa2b6ce4fcd10e77b5288617d88506d927a94a95e1b5c422cd79a4a8faeb63781809d40f6df338de94fa7713ad094f539d659f85de9140cb
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Goi20PbV4:xj+VGMOtEvwDpjubEgV20Du

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022fdc-13.dat	CryptoLocker_rule2
behavioral2/memory/1548-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3632-52-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000022fdc-13.dat	CryptoLocker_set1
behavioral2/memory/1548-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3632-52-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000022fdc-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1548-25-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3632-52-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3632	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 1548 wrote to memory of 3632	1548	2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe	98
PID 1548 wrote to memory of 3632	1548	2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe	98
PID 1548 wrote to memory of 3632	1548	2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_fbd0d68705ceb2511713125624a4d8e5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1548
- 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:3632

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1424 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:3672

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
58KB

MD5
4bd6c733de919ea394b67d6593a1cfe4

SHA1
4c61bcca86094eeefcb0d5fcde33c368687d4478

SHA256
c61a3be16e33412f8e0e9920b95031ceac81b25c17dd7f3c080756c3d44351a2

SHA512
62719569c84b838210122a6e9d21e3a0d6852b09fee6800f7c3f2a62b4c8f33c9d633e77ea8378053833319a23390401cf9a519bb45efc7b49bc77616231a415

Download Submit
memory/1548-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1548-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1548-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1548-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1548-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3632-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3632-21-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/3632-52-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download