928476d931b09fb2ec850737fa0629c34f17772dab1064829d3f23ecd0ab40d0

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
02/09/2023, 19:20

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General

Target

2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe
Size

145KB
MD5

7295b5042553809b95f4f77b20d43025
SHA1

321faf04db74101ea632298abafbbeffb954e593
SHA256

928476d931b09fb2ec850737fa0629c34f17772dab1064829d3f23ecd0ab40d0
SHA512

282fe25758ec74c50db66fb5e53881f3c129d854ece76926fcdafc5dd3d837faa01df5520d110598819d64b88e7000d9217bb84e040073dc2014cd884de2861a
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgp699GNtL1eex:T6a+rdOOtEvwDpjLz4

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
560	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2064	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2064-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00060000000120e4-11.dat	upx
behavioral1/files/0x00060000000120e4-14.dat	upx
behavioral1/memory/560-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2064-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00060000000120e4-25.dat	upx
behavioral1/memory/560-26-0x0000000000500000-0x0000000000510000-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 2064 wrote to memory of 560	2064	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	28
PID 2064 wrote to memory of 560	2064	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	28
PID 2064 wrote to memory of 560	2064	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	28
PID 2064 wrote to memory of 560	2064	2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-22_7295b5042553809b95f4f77b20d43025_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:560

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
145KB

MD5
4eec5e9ef65779b3aefb570c1c73beee

SHA1
a2ab3cd7dd74729606802d15c907c833a81a9347

SHA256
662a063ab241a7c86b4faa317ca88b92aaf1e9ee8b7f9bffff2ade3e18496ae5

SHA512
699642be08cbad92b66518d6bca55a60c1221a35f15e1ebbb3babbd889f14ba45985ead956828529219fd2d869dce897ec17971a8c7004e1a59b9a7bfaabef65

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

Filesize
145KB

MD5
4eec5e9ef65779b3aefb570c1c73beee

SHA1
a2ab3cd7dd74729606802d15c907c833a81a9347

SHA256
662a063ab241a7c86b4faa317ca88b92aaf1e9ee8b7f9bffff2ade3e18496ae5

SHA512
699642be08cbad92b66518d6bca55a60c1221a35f15e1ebbb3babbd889f14ba45985ead956828529219fd2d869dce897ec17971a8c7004e1a59b9a7bfaabef65

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

Filesize
145KB

MD5
4eec5e9ef65779b3aefb570c1c73beee

SHA1
a2ab3cd7dd74729606802d15c907c833a81a9347

SHA256
662a063ab241a7c86b4faa317ca88b92aaf1e9ee8b7f9bffff2ade3e18496ae5

SHA512
699642be08cbad92b66518d6bca55a60c1221a35f15e1ebbb3babbd889f14ba45985ead956828529219fd2d869dce897ec17971a8c7004e1a59b9a7bfaabef65

Download Submit
memory/560-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/560-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/560-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/560-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2064-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2064-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2064-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2064-4-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2064-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download