dc029e968124764e890d34012b47a56097a5ce9e69cb9d8593caf9b5437d03c4

Analysis

max time kernel
155s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 15:50

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General

Target

2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe
Size

39KB
MD5

d7262fb06d4368b977ac068d74a68a17
SHA1

a2a88d949c553506cb4946181c8035890608ea50
SHA256

dc029e968124764e890d34012b47a56097a5ce9e69cb9d8593caf9b5437d03c4
SHA512

abf1c43a6538fff48b76e3d3273ba57ee651f4984a09f166d44fb40017c311fb79f3f954cd8ec3d38f13cca142418d115997b50a8715e9896552e2e85ceb3aa6
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLtldJQp3v2Z:i5nkFGMOtEvwDpjn/JQxM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2704-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023210-13.dat	CryptoLocker_rule2
behavioral2/memory/2704-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1272-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2704-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1272-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2704-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023210-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2704-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1272-26-0x0000000000500000-0x000000000050F000-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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1272	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 2704 wrote to memory of 1272	2704	2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe	90
PID 2704 wrote to memory of 1272	2704	2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe	90
PID 2704 wrote to memory of 1272	2704	2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_d7262fb06d4368b977ac068d74a68a17_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1272

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
ff4f606402cbef8399f5b88809a776cb

SHA1
fd1070bcbadd1d865eebb79ee2a09c440e186866

SHA256
322a3cd5825c49885124aa4959e0f8f0c06ae79db46435d8f8b1a6ed7ffc5390

SHA512
e68fab65e2280d15730c6d828e0ba317b44938ce9dc6d2d932b393e58f0030deed9b10406c15982a58e1a056eff2584eb12399a62e18c559c46cb21ab580f9e7

Download Submit
memory/1272-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1272-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1272-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2704-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2704-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2704-2-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2704-3-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2704-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download