3ea58915359aa61877d71ccfbc5df9f8bea50ca4beca7a0f4ad49dff0086986a

Analysis

max time kernel
0s
max time network
137s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 05:48

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General

Target

2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe
Size

99KB
MD5

aac2c540f13f84bc23677cc08912d933
SHA1

0df30ff4803033a970516dee077d7ad2d70750dd
SHA256

3ea58915359aa61877d71ccfbc5df9f8bea50ca4beca7a0f4ad49dff0086986a
SHA512

215d49fa6d3017b360a3a6f98de80b2b26351b53f2e7bd4b3811529436526c8a4874f7748d4284e7c95e6b0f464ed7183366eeb04610ad08cba174ebfd6fdfb1
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviP1o:AnBdOOtEvwDpj6zo

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2372	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1848	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0009000000015c46-26.dat	upx
behavioral1/memory/2372-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1848-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0009000000015c46-14.dat	upx
behavioral1/files/0x0009000000015c46-11.dat	upx
behavioral1/memory/1848-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2372-27-0x0000000000500000-0x000000000050F000-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 1848 wrote to memory of 2372	1848	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	16
PID 1848 wrote to memory of 2372	1848	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	16
PID 1848 wrote to memory of 2372	1848	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	16
PID 1848 wrote to memory of 2372	1848	2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe	16

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2372

C:\Users\Admin\AppData\Local\Temp\2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_aac2c540f13f84bc23677cc08912d933_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1848

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
7KB

MD5
89bafb7bc526766a43c32988abe88c89

SHA1
2f5ab2075e8a1f4bbc1399e759ef74ab8a6820a2

SHA256
b2375cc2d79b2fd5a03b1084b68341df32f77db1ba02dabcc1af336efafabaa9

SHA512
edae98c29619f3996fdb022c07cd82143a653f7d40b0d02219855add3cb3863a677809531f3a15a1cbf97cebcf1239785c137f7f05cd919fd941eb403395db64

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

Filesize
1KB

MD5
97a3f352fa15ffe31601bd0598642563

SHA1
6ec50c0cc7b0162de2f240d5a26476d47fdadd49

SHA256
66a0e618a7e8cda430bd50a002ee016a6357cb2153ac906453a87a42537b6e8e

SHA512
c32f233b6929d6186bf4bdeb882ec9f393c060b8ae81d479558a03cc402c91541d473e1178548dc7cb7c3355ad303e986640f18bb2599282e45528b29393823f

Download Submit
memory/1848-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1848-16-0x0000000002840000-0x000000000284F000-memory.dmp

Filesize
60KB

Download
memory/1848-3-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/1848-0-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/1848-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1848-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2372-19-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2372-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2372-21-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2372-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download