b7e0348ffb44bbc57accd50388b0dbbeebe5be9d1128ffcc359054b57d8781da

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
10/03/2024, 02:50

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General

Target

2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe
Size

38KB
MD5

d51e977f3f49009d2b9d02921835b843
SHA1

20fabc351c0c01e4edbc71e49439862fe4ab7e7a
SHA256

b7e0348ffb44bbc57accd50388b0dbbeebe5be9d1128ffcc359054b57d8781da
SHA512

2c40886fa51639d6bfe93a9ebf8a0774bae1aca3b501e2fab4e1dac9b858a5b7da644cdd3cd83f300ac865ea57039aa5da10eaf6d52672df9239595999dcfaff
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvP7DMr:m5nkFNMOtEvwDpjG8hP7DMr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2364-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_rule2
behavioral1/memory/2364-15-0x0000000001CF0000-0x0000000001CFE000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2364-14-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2380-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2364-14-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2380-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2364-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x0009000000014120-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2364-14-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2380-26-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2380	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2380	2364	2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe	28
PID 2364 wrote to memory of 2380	2364	2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe	28
PID 2364 wrote to memory of 2380	2364	2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe	28
PID 2364 wrote to memory of 2380	2364	2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_d51e977f3f49009d2b9d02921835b843_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
38KB

MD5
cdfbb92b6379923239fd91c7d488edc0

SHA1
59f854bb046525e866aa7067cb404bf63420b4fc

SHA256
f687f79caa0341eb89020c6f524476f2575fd4f0f5351342ea83d1035f058f5f

SHA512
d5988f5f328fa0b35ff2f77655e0c3ae99e3666541285a620a913bd70f21b47d0ddf7da89ae461bd75e03f2864afb27ebe286ea3a80cb4ea0f5d85bbdcae6853

Download Submit
memory/2364-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2364-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2364-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2364-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2364-15-0x0000000001CF0000-0x0000000001CFE000-memory.dmp

Filesize
56KB

Download
memory/2364-14-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2364-27-0x0000000001CF0000-0x0000000001CFE000-memory.dmp

Filesize
56KB

Download
memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2380-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2380-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download