690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 22:51

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General

Target

690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe
Size

34KB
MD5

8b48af49db0c66113530e9daaec8c5fc
SHA1

43dd0b7c091562d7a4b9853efac69aa5e3a26a8b
SHA256

690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b
SHA512

4c64c7b3fcb9a55c09bf0aa064ecd02cb8098bd2867fdf178f006f59e39b68512f4815ee9db0258ed7d368154d354c13a1e042fbff2c415b890a8cb462f82a0e
SSDEEP

768:bFPm5zusFUB2preAr+Ofjg0S16avdrQFiLjJvtXm:bFPmpiif/oc+vXm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2104-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000144e4-11.dat	CryptoLocker_rule2
behavioral1/memory/2104-16-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2756-18-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2756-27-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2104-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/files/0x000c0000000144e4-11.dat	UPX
behavioral1/memory/2104-16-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2756-18-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2756-27-0x0000000008000000-0x000000000800E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2756	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2104	690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2104-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x000c0000000144e4-11.dat	upx
behavioral1/memory/2104-16-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2756-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2756-27-0x0000000008000000-0x000000000800E000-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 2104 wrote to memory of 2756	2104	690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe	28
PID 2104 wrote to memory of 2756	2104	690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe	28
PID 2104 wrote to memory of 2756	2104	690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe	28
PID 2104 wrote to memory of 2756	2104	690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe	28

C:\Users\Admin\AppData\Local\Temp\690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe
"C:\Users\Admin\AppData\Local\Temp\690dd31781d5f10a049aaf9dc73ca5d52b9f9d6ef26377fc9e1d9aa5744f0b8b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2756

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\lossy.exe

Filesize
34KB

MD5
bdeca6ea5e1001c9757d0770bfe65137

SHA1
f5cfc72dcc74d1e25a0a823e15ecae4966fa1a3f

SHA256
70015b038a033e6ccf98d883978e7fe44b72a2fdd68578f96456abedde5fb9f2

SHA512
c26afadc0f9dd8e77cae451780d21bf36769c83e07d86ac82b8d27040ea2c62c6bad412c28015f8a0c7a44396a27d8ab63602a4485ab6ae412c22f7a4359629e

Download Submit
memory/2104-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2104-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2104-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2104-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2104-16-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2756-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2756-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2756-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2756-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download