0bb0ac6e04d513ecd135d626a9fdb415799bb0f69fe06411cd57ce3bf82c9444

General

Target

2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe
Size

78KB
MD5

4ce8dace0240166cbaa7f0d501f93428
SHA1

0295d218d54dfb1542b878687cc096b80075414f
SHA256

0bb0ac6e04d513ecd135d626a9fdb415799bb0f69fe06411cd57ce3bf82c9444
SHA512

160005251a263d1c0cd31c7a829b8c0378b2986e54875f2b62c164948bb51d233b4b5b9beaff9e63afdeb64e18e6e8430a787b4944a38266e3fa3a5b86dfedd0
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxB1FN:T6a+rdOOtEvwDpjNtHPU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3012-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3012-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3012-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3012-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2548 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe

pid process

3012 2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe

pid	process
2548	asih.exe

pid	process
3012	2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/3012-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3012-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe

description	pid	process	target process
PID 3012 wrote to memory of 2548	3012	2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe	asih.exe
PID 3012 wrote to memory of 2548	3012	2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe	asih.exe
PID 3012 wrote to memory of 2548	3012	2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe	asih.exe
PID 3012 wrote to memory of 2548	3012	2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_4ce8dace0240166cbaa7f0d501f93428_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
78KB

MD5
7fa04fb1761d4f2cc405113bf9c3b4cd

SHA1
7118f4e7be5ae532d1d272ddd1fa70ecfde39dae

SHA256
014e4d17c387679966c4803577b9b68017e7d5cd608bef033377853312e64586

SHA512
efa0abb02ed10a5e1c141159b19b1d869e64c92a5aade5d7e2bc8c967da4c34df38a8f9f38c422d53497ae43c21eaddf46bb17616bb40cca4fcc5c5f4bfdf93d

Download Submit
memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-18-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2548-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3012-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-9-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3012-3-0x0000000001CD0000-0x0000000001CD6000-memory.dmp

Filesize
24KB

Download
memory/3012-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads