e01c52cf9769af13754c1c4b5a89fdc60ce01a4367eb48b49f47e5fa9ea6b420

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
19/03/2024, 23:40

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General

Target

2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe
Size

100KB
MD5

ad5faca8181b4ca1dfdf2491dc002785
SHA1

422d62c0195909e05926f06f20c77e45331145b1
SHA256

e01c52cf9769af13754c1c4b5a89fdc60ce01a4367eb48b49f47e5fa9ea6b420
SHA512

c1ecf5b4a67b22beb8f72367ed429855b91b00af4c1ecfc7dfd1ce9e7eec29ff556fcdaf344e212d570cc9f15c706e9f84c02c5352c1b315871f8a0d6ccc3baf
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPy1Q:AnBdOOtEvwDpj6z5

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001227d-11.dat	CryptoLocker_rule2
behavioral1/memory/2140-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2924-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2924-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001227d-11.dat	CryptoLocker_set1
behavioral1/memory/2140-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2924-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2924-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000b00000001227d-11.dat	UPX
behavioral1/memory/2140-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2924-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2924-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2924	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2140	2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b00000001227d-11.dat	upx
behavioral1/memory/2140-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2924-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2924-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 2140 wrote to memory of 2924	2140	2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe	28
PID 2140 wrote to memory of 2924	2140	2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe	28
PID 2140 wrote to memory of 2924	2140	2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe	28
PID 2140 wrote to memory of 2924	2140	2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_ad5faca8181b4ca1dfdf2491dc002785_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2924

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
100KB

MD5
1df3eb135b008369a36132d2dc1d3f0d

SHA1
89834476cbd9f9542117841157acbd2a5fff0bc2

SHA256
5b80f7079a70a074b9054760eaea2ffe575a328725195c5cf178639e27d99f4f

SHA512
c7dc7cd579b5415d53db83eec49e7a30e4bbcbb456aeccf86fb472f986a1ce665880a0783121b10efd6dd9de051818ef79125165b8f6207a79be7607c69c421a

Download Submit
memory/2140-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2140-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2140-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2140-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2140-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2924-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2924-18-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2924-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2924-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download