139bd8c75237394cdacd1f68040940a58503c28f43d44862575c9e3e06232f00

Analysis

max time kernel
96s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16/09/2024, 17:55

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General

Target
Trojan.Win32.Floxif.dll
Size 76KB
Sample240916-whk8ea1fpd
SHA256 139bd8c75237394cdacd1f68040940a58503c28f43d44862575c9e3e06232f00
MD5 d9fd66951c13cd41779d28df033fb0c0
SHA1 5265128819fc1f60abc208f61fe1a65e00d23c49
SHA512 83dd664d08e2592a1d2d156f676034a04b8fba18aebb3fd70bf1614d5d1ab4cf076985e275853a8741f76b8e32fd52b5a8bff7cdb81999ec581e822e29506cd1
SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZFWW5sOjIk:c8y93KQjy7G55riF1cMo03fWW5sOjIk
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2044-0-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2044-2-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1352	2044	WerFault.exe	82

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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 2044	4740	rundll32.exe	82
PID 4740 wrote to memory of 2044	4740	rundll32.exe	82
PID 4740 wrote to memory of 2044	4740	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Floxif.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.Floxif.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2044
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2044 -s 696
    3⤵
    - Program crash
    PID:1352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2044 -ip 2044
1⤵
PID:3784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2044-0-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/2044-2-0x0000000010000000-0x0000000010030000-memory.dmp