3911035e037ad44c2e49b85244ffd5cbab993f4c4c381f525dafd21227c154cc

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:41

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General

Target

2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe
Size

48KB
MD5

1b5ee02c7c766a288bb60e4f4f4f5ed1
SHA1

2978cb1635ea7c6150ef9d1072b417861405b9e1
SHA256

3911035e037ad44c2e49b85244ffd5cbab993f4c4c381f525dafd21227c154cc
SHA512

029fb900fb6f37f8f0e22cb7125df2e2f759f54bffbd790817984056a8fcc61bd7f9e84a213079c054623740233d203378e20ce6e8e073f21fd6ce51dbf4bc54
SSDEEP

384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRS7:XS5nQJ24LR1bytOOtEvwDpjNbP/bmM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1424-13-0x0000000000900000-0x000000000090F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1424-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1424-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1424-13-0x0000000000900000-0x000000000090F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1424-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1300 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe

pid process

1424 2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1300	misid.exe

pid	process
1424	2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe

description	pid	process	target process
PID 1424 wrote to memory of 1300	1424	2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe	misid.exe
PID 1424 wrote to memory of 1300	1424	2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe	misid.exe
PID 1424 wrote to memory of 1300	1424	2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe	misid.exe
PID 1424 wrote to memory of 1300	1424	2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_1b5ee02c7c766a288bb60e4f4f4f5ed1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1424

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1300

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
48KB

MD5
41c2b70ae7b1293028967bff53e99284

SHA1
77344df81a285da88102813eb52ee90a9643dd71

SHA256
d06b15d72b4a100fe693b9dba444617f722c4bc7f12e4251557beda13e212f50

SHA512
26e537c8a0b4fd36f01f1e856d327cb9ff1a48b682840e7624df3e9574b3acad4ae692f08322cedef89e92725cc4bd0a96c785b41f84fbee68feded01cf01d67

Download Submit
memory/1300-19-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1300-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1300-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1424-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1424-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1424-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1424-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1424-13-0x0000000000900000-0x000000000090F000-memory.dmp

Filesize
60KB

Download
memory/1424-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download