291335d5f0d4837fff0393264559776f2fa05d2e4b4f7229f34b1c3788b19c01

Analysis

max time kernel
160s
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
20/03/2024, 00:51

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General

Target

2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe
Size

40KB
MD5

9ef2b49bd12b03e11502f0b26f8670b7
SHA1

1a0fd4025e141825bbaece106ca7dc99df540f52
SHA256

291335d5f0d4837fff0393264559776f2fa05d2e4b4f7229f34b1c3788b19c01
SHA512

d728511e48c607c24e68a542aa1f695f231b79ebe7d9826f7c9b539b2085cc8b6cfff722e18eec849d7b7c242d00f7e9f52bdf035dbb7a795230d03f71aa4e55
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRpptB:m5nkFNMOtEvwDpjG8hhXzzB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral2/memory/4304-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4304-1-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023269-14.dat	CryptoLocker_rule2
behavioral2/memory/4704-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4304-20-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4704-28-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4304-1-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4704-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4304-20-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4704-28-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 6 IoCs

resource	yara_rule
behavioral2/memory/4304-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4304-1-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023269-14.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4704-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4304-20-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4704-28-0x0000000000500000-0x000000000050E000-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	2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4704	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 4304 wrote to memory of 4704	4304	2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe	99
PID 4304 wrote to memory of 4704	4304	2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe	99
PID 4304 wrote to memory of 4704	4304	2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4704

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=4136 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4112

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
40KB

MD5
f7cb8aa3470a447ce980acddaad8a22c

SHA1
5ebe437b655199f2dd15014f896252f9ea01e296

SHA256
f0e7e2dfa323e101e580db1960c06930d0e0d6ceda15ff7ae8bd3af8a73f2676

SHA512
161365c8a9c207e3e81a1e7245600001ac0e0b8d68b2aa952811ca24f360e35e2bed7baebba9799edb012ca59c89ff39ed3f3c6e7d6f1677cdb93100de1876a4

Download Submit
memory/4304-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4304-1-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4304-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4304-3-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4304-4-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4304-20-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4704-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4704-21-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4704-22-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4704-28-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download