a4cae695c39b7d99ae6d2ed97b854a3f33449d60c9755449990a4443704c8d7f

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 10:24

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General

Target

2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe
Size

40KB
MD5

1f85c04217edd9533988b97eaac95e48
SHA1

757e5fe292aad93b47d79d35c8e6cf0a9a872581
SHA256

a4cae695c39b7d99ae6d2ed97b854a3f33449d60c9755449990a4443704c8d7f
SHA512

3462418798769dbbce68629aee201e556213102934079f13605ff97957e917222cf1f7fcac0dbec6602bc242e8dc80db757eb3dee5e0f09d8732cfb3285f561a
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtVw:6j+1NMOtEvwDpjrR2Vw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2532-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012246-11.dat	CryptoLocker_rule2
behavioral1/memory/2444-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2532-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2444-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2532-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000012246-11.dat	CryptoLocker_set1
behavioral1/memory/2444-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2532-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2444-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2532-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000d000000012246-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2444-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2532-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2444-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2444	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2532	2024-02-18_1f85c04217edd9533988b97eaac95e48_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 2532 wrote to memory of 2444	2532	2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe	28
PID 2532 wrote to memory of 2444	2532	2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe	28
PID 2532 wrote to memory of 2444	2532	2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe	28
PID 2532 wrote to memory of 2444	2532	2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_1f85c04217edd9533988b97eaac95e48_cryptolocker.exe"
1⤵
- Loads dropped DLL
- 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:2444

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

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Downloads

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

Filesize
40KB

MD5
0beecfeab4e7b26bece558c7af61f36d

SHA1
91b3e4b5583075023d1ad02f9335c1ba9a6287d1

SHA256
b4d35604c69bbf7663d8fba849d7a6be2f6b24976948444c7c73244630bdd558

SHA512
563f9fd39ae9c7f0f4cca86a03c64f74dfb8ec08f1ca4a958efd5eb07b62c3874af52695ce70350a6f78ea587a71b10c3304299910865ce6cf93615e5e0a9fc5

Download Submit
memory/2444-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2444-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2444-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2532-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2532-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2532-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2532-9-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2532-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download