a97caeea5750215ce3f795d9e309e43ae4afa66ca3092e172ce66688996f0b29

Analysis

max time kernel
122s
max time network
149s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
02/08/2024, 21:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

data/OFFLINE/5EC33410/17F238BD/Bassalu4x10_con30_capedge.grir
Size

15KB
MD5

23b8fa438e74072ac921baedb33eeb1f
SHA1

56bbcea497ca59ab99972b67ba765e48a739185d
SHA256

56f89cdbcef290097bf9fff1547814f20fedcb23c8bad362c8832e6d71da1662
SHA512

c3740c2d7dd2605e1442b80c4e1fca56f61746629b23cdd50b918e35caa9fe5fbd9411e8ad27c0add8492f6eeb4028ad68fb15d7cf00ba14dee51c4dba453a09
SSDEEP

384:wwj1707RD12oWjXttCAUames2cxDLH3/Gh9pfF:wwVUt1RWjXttCAfmRx17/Ghp

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\grir_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\grir_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\grir_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\.grir\ = "grir_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\grir_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\grir_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\grir_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000_CLASSES\.grir	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2720	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2720	AcroRd32.exe
2720	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 696	2756	cmd.exe	31
PID 2756 wrote to memory of 696	2756	cmd.exe	31
PID 2756 wrote to memory of 696	2756	cmd.exe	31
PID 696 wrote to memory of 2720	696	rundll32.exe	32
PID 696 wrote to memory of 2720	696	rundll32.exe	32
PID 696 wrote to memory of 2720	696	rundll32.exe	32
PID 696 wrote to memory of 2720	696	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_capedge.grir
1⤵
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_capedge.grir
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:696
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\data\OFFLINE\5EC33410\17F238BD\Bassalu4x10_con30_capedge.grir"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
a8bf2f8719c82974e2d34800bfaaea62

SHA1
d6dbc1fe953249928334360d439eb9a082ff2a47

SHA256
4b6c6f32764afec17a8adf51126fc0023e66dba48295e2b1d440b9a08b0512d1

SHA512
2db0498e25a9eb8796d83a79b1940a278e7555702bb69dc8f7575911c43f69aff35f85f21b01b83e2b008a19263d75f3056be39aeea3d505457574258345b977

Download Submit