5978311f68d3825a3114c6c95723d2a6c875c7c28a5e507501ad7c34e5387ba0

Analysis

max time kernel
0s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 22:45

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General

Target

2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe
Size

44KB
MD5

4f79ef6e14940e1530890c91914a662b
SHA1

b721c97bb9a3b25f37738a53a29b0d5520c9ac90
SHA256

5978311f68d3825a3114c6c95723d2a6c875c7c28a5e507501ad7c34e5387ba0
SHA512

e584c79d305c25d5e932186a4722960d4f9bfa20a61e930a443bbe63a2ace8bb2a9a8d26b7c38603339fa385684443baf1af429d0346f9f23fbc92990a93d273
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YlPI:bgGYcA/53GAA6y37Qg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/files/0x000600000001e5df-12.dat	CryptoLocker_rule2
behavioral2/files/0x000600000001e5df-14.dat	CryptoLocker_rule2
behavioral2/files/0x000600000001e5df-15.dat	CryptoLocker_rule2

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	hasfj.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 3592 wrote to memory of 2164	3592	2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe	51
PID 3592 wrote to memory of 2164	3592	2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe	51
PID 3592 wrote to memory of 2164	3592	2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe	51

C:\Users\Admin\AppData\Local\Temp\2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_4f79ef6e14940e1530890c91914a662b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2164

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\hasfj.exe

Filesize
9KB

MD5
15f70a631af003759933105e90845e43

SHA1
c04cd6240e6da5d7c7d895ecd4d25253e6ee8cb6

SHA256
98ddb31c53708fc7625ada22f28a74e17a3b1ff5de2c86ba0c6e9a3a3950f6df

SHA512
c65c1578c3c26399f9d06a1dae121313d49ed12a8517679c0843c0b711038c7e48bcbf76ce86b7258728b9b8dea9d8b7a1dab1486bc81dddd9bfd7c0ef3f5b80

Download Submit
C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
36KB

MD5
4f1e5bc5538ad3b5db1d0868cda30e16

SHA1
08c3a8ccee28f1e2d7f98dfe1cdda3f535ae09e0

SHA256
f661c6b88a5f738795e2b0960594e355a220324242e5202bf7778bef5a22da97

SHA512
4e0c7010b92f78860fbc574b35b2c3bbb9167a9e0f9ad7d0d5bde0a69d164af9ac1fb9bfd267dc59a63d20167c8857fd3dd7d88745d0d129ae806538d7758aa2

Download Submit
C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
37KB

MD5
f59466906acb6851c15a689d8ab72d01

SHA1
784939c68b3a08c1d77b09b8eaa904e0ed302e5c

SHA256
fdc479fac5adf47ac54156c513db7a864fc696b0576b995e41b8eeda6cb87120

SHA512
ef6ec29fd15b06de0a3b4f2c87481e56f0909d9e4a95fd8c53ee0b502566f4c57713cda0c4c622ac4cd71462ee09569d6e29b41acde87a406bedef5a530f2031

Download Submit
memory/2164-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2164-23-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3592-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3592-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3592-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download