4600e7848bf56578d1ff48722a8d93abb774279111f9a68e3c7951f712523d10

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/02/2025, 03:50

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General

Target

join.exe
Size

200KB
MD5

ea95542a4a96525ec8eaf1f26d6770c5
SHA1

c97a8c81d5105d8ab822edb1b68a1053e9fd2ded
SHA256

4e718d1c539bace6976465321f3c86e79c652fbdb34e1997888cac3b0e58c661
SHA512

09f0be9c78ef88029a67012a59d570dc29f8f6f3d7f57c07cc9778e6e4d320b943ae9d39882bbb58916129e984bc0b005eef46b77142c1931925d73c1568721c
SSDEEP

3072:PTqPRdyeIKDWx85IOlKeJVos/8eRwXiUUAdV95I4Rp+LH1xrl3Ez8ub8Xr:PTqPRddIKCC0ef//uXltKc+LVsz9b8

Score

7^/10

discovery spyware stealer upx

Malware Config

Signatures

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3060 set thread context of 2700	3060	join.exe	30

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2700-6-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-7-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-2-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 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	join.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	join.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3060	join.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30
PID 3060 wrote to memory of 2700	3060	join.exe	30

C:\Users\Admin\AppData\Local\Temp\join.exe
"C:\Users\Admin\AppData\Local\Temp\join.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Users\Admin\AppData\Local\Temp\join.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2700-6-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-7-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-2-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download