21c4511bebd4fc2a23f970409f16c540c4ff7fd76152cd510691a9aa16610a00

Analysis

max time kernel
142s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 17:27

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General

Target

2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe
Size

49KB
MD5

353ee9e7b3e2202ccbdab8c736bf81d8
SHA1

78e25846df478c0de08d661a455e40a4e740d59f
SHA256

21c4511bebd4fc2a23f970409f16c540c4ff7fd76152cd510691a9aa16610a00
SHA512

4f448cc3f9218d916b59eadb4327df0aeaf7e988a8bee61aef894f67df9e8b2392d7ee6ee3c5f84e3984afad8dbda80096b91d6f0401d7a00b192ceb3385f06d
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaSvaB:xj+VGMOtEvwDpjy+TRB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2532-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000002271f-13.dat	CryptoLocker_rule2
behavioral2/memory/2532-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2532-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000002271f-13.dat	CryptoLocker_set1
behavioral2/memory/2532-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2532-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000400000002271f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2532-25-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3044-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3044	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 2532 wrote to memory of 3044	2532	2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe	100
PID 2532 wrote to memory of 3044	2532	2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe	100
PID 2532 wrote to memory of 3044	2532	2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_353ee9e7b3e2202ccbdab8c736bf81d8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3044

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=3876 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:2672

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
49KB

MD5
087fac8895cc739f202f71175bc58f7e

SHA1
046fba0799db2245e898d3b4a9625d5abbcea609

SHA256
cd8ad8f5e6452ec81262bfd9fedef42881e29fc5c86d983e8bf50fece2325634

SHA512
f8473a5051af7203b04e2a9b58dd36e881c58ac4bca9e76815a7200ac5c0f0dd6c3e5f2a4a709c830e158b240bc3a7d22b08edb08604a687ca0f6a12cdeff0cf

Download Submit
memory/2532-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2532-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2532-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2532-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2532-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3044-18-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3044-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download