bbdfa263a204011e8a494e3c8727ce8484e5c1909c58e5b16e192779afef7a7b

Analysis

max time kernel
149s
max time network
153s
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, 17:33

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General

Target

2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe
Size

101KB
MD5

99487f7a2b4eca02428df8c68cc99550
SHA1

3019e2580315583aae0be5a1767d634817eaf5ab
SHA256

bbdfa263a204011e8a494e3c8727ce8484e5c1909c58e5b16e192779afef7a7b
SHA512

bd7ef9c73e3a55779d506d0328bc1d13e5428dcba220111889f587c21dd72fb214f66a15c89078fc5eeefb521bea62ed9d40767380e78991e566da963247ddf5
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNojlEaj:i5nkFGMOtEvwDpjNbwQEIikgNyEk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2408-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_rule2
behavioral2/memory/2408-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1120-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1120-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2408-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1120-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1120-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2408-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000001e59e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2408-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1120-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1120-27-0x0000000000500000-0x000000000050F000-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1120	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 2408 wrote to memory of 1120	2408	2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe	88
PID 2408 wrote to memory of 1120	2408	2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe	88
PID 2408 wrote to memory of 1120	2408	2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_99487f7a2b4eca02428df8c68cc99550_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1120

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
101KB

MD5
e70ed5dcd5b334218463bdf1804ed8b4

SHA1
589ff04faccd5f59842ad2c435841e4a0ef35d19

SHA256
5a7d8294c31fca921faf7c47c07c7fe8682fef85081922b12e1d779a706c6a43

SHA512
f64afc87c0446e949a0b95eb0fe001922c958dd75ea10d7b84cffb97fb6fff8333e280daba51cb450142f18b6b0492c25b006c23e004b7aa745b32880bd0c9d2

Download Submit
memory/1120-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1120-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1120-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1120-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2408-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2408-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2408-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2408-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2408-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download