e18ef37e6492ec36977361506b73efb434b23a3c5552edb9d0e5a3bb74094af3

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
08/08/2023, 07:01

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General

Target

anfrselens.exe
Size

260KB
MD5

4f11205da3e4d05588bcb5a6e518c1df
SHA1

95410e7b774bf3f1ba9171b8c2b9e0b154bb1c29
SHA256

e18ef37e6492ec36977361506b73efb434b23a3c5552edb9d0e5a3bb74094af3
SHA512

36e38de3c86f41f286d76a791d40a708e727fe0a3feb273b137cbbff69b9a42d9a0cc7338dee8edf2a3c88b881a92156473768be44bd7ae47d09beed57b33b20
SSDEEP

6144:/zAJFlyucwHFp7VzirVN+P1HT5EzjWwM7jpz5jU:rCfv8idz5E/Mnpz54

Score

7^/10

Malware Config

Signatures

Checks QEMU agent file 2 TTPs 1 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	anfrselens.exe

Loads dropped DLL 1 IoCs

pid	Process
2440	anfrselens.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2440	anfrselens.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1360	2440	WerFault.exe	27

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 1360	2440	anfrselens.exe	30
PID 2440 wrote to memory of 1360	2440	anfrselens.exe	30
PID 2440 wrote to memory of 1360	2440	anfrselens.exe	30
PID 2440 wrote to memory of 1360	2440	anfrselens.exe	30

C:\Users\Admin\AppData\Local\Temp\anfrselens.exe
"C:\Users\Admin\AppData\Local\Temp\anfrselens.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 252
  2⤵
  - Program crash
  PID:1360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsjBECE.tmp\System.dll

Filesize
11KB

MD5
4d3b19a81bd51f8ce44b93643a4e3a99

SHA1
35f8b00e85577b014080df98bd2c378351d9b3e9

SHA256
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce

SHA512
b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

Download Submit
memory/2440-65-0x0000000076D40000-0x0000000076EE9000-memory.dmp

Filesize
1.7MB

Download
memory/2440-66-0x0000000076F30000-0x0000000077006000-memory.dmp

Filesize
856KB

Download