b3b345ee275d1dc329bea513450684965683925b8339d29a3833442548b6e731

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:01

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General

Target

2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe
Size

48KB
MD5

ff0f5d33ef6ae3271c795df1f3138809
SHA1

3d43aa1d97d134dc65242034a0b2f6ff90d33dc3
SHA256

b3b345ee275d1dc329bea513450684965683925b8339d29a3833442548b6e731
SHA512

0537acfa5fee01b4351bb30a69ec4b2daf9d071c01ef6bd33505a4b725fc0cf0b30af6e81a592c60124cb1df8168634c7c607ca65fd834d1459f210eb1685867
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcb:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2068-13-0x00000000004E0000-0x00000000004EB000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2508-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2068-13-0x00000000004E0000-0x00000000004EB000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2508-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2508 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe

pid process

2068 2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2508	asih.exe

pid	process
2068	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe

description	pid	process	target process
PID 2068 wrote to memory of 2508	2068	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe
PID 2068 wrote to memory of 2508	2068	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe
PID 2068 wrote to memory of 2508	2068	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe
PID 2068 wrote to memory of 2508	2068	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2508

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\asih.exe

Filesize
48KB

MD5
eab31dc6d1e21b853d81267811a1e396

SHA1
dae5340e6d7b01fc71c90bd3564481666a7fe967

SHA256
09f664756d0fc39dd1574207b9e788946a1f08a4c2f050103c121fbd674c22aa

SHA512
ad61b2a4f1e842c1c186ad91538db1a3920418fd1cfc1b2f26587c983c40f39d70216efad51968a8c2228be573a5fe4bccca7d2c94d31737d16bfc7c72ba7e0f

Download Submit
memory/2068-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2068-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2068-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2068-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2068-13-0x00000000004E0000-0x00000000004EB000-memory.dmp

Filesize
44KB

Download
memory/2068-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2508-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2508-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2508-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download