b8c979d8dae6e6a878515445a2b5763b32fb6987e227b469098e98312cd8163a

Analysis

max time kernel
93s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-12-2024 06:54

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General

Target

f2cf434126f78e89efc4cdb933343894_JaffaCakes118.dll
Size

256KB
MD5

f2cf434126f78e89efc4cdb933343894
SHA1

553f65c0338509dff315c5b4b542c7ae78ad6ce2
SHA256

b8c979d8dae6e6a878515445a2b5763b32fb6987e227b469098e98312cd8163a
SHA512

37764c3a7d45fabc6129a14a2c41b200f91e2626c022c09151e151bd471cd60fe5937c78b169f4b6d1295bfe91bc073e3bce3f6dfc4c2d2ec00e0494f650606c
SSDEEP

6144:5U+xn9iW0MuQEoEyAOyX/u2LmR1sABkmrYJsoyWIFWyjHGaKQ:C+xn930MAy12Lat6sP22Ga3

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3312	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b88-3.dat	upx
behavioral2/memory/3312-5-0x0000000000400000-0x000000000047A000-memory.dmp	upx
behavioral2/memory/3312-7-0x0000000000400000-0x000000000047A000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
628	3312	WerFault.exe	84

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 3736	5008	rundll32.exe	83
PID 5008 wrote to memory of 3736	5008	rundll32.exe	83
PID 5008 wrote to memory of 3736	5008	rundll32.exe	83
PID 3736 wrote to memory of 3312	3736	rundll32.exe	84
PID 3736 wrote to memory of 3312	3736	rundll32.exe	84
PID 3736 wrote to memory of 3312	3736	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2cf434126f78e89efc4cdb933343894_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2cf434126f78e89efc4cdb933343894_JaffaCakes118.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3736
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3312
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3312 -s 520
      4⤵
      Program crash
      PID:628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3312 -ip 3312
1⤵
PID:4732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
184KB

MD5
599ff0c3453d3d76aceb3d72533083f1

SHA1
b8661717748ec49bddb033f728660f3e877844c2

SHA256
75e8583e98f48d7b2edc182a6643f5c22d77ac9f669624580d9194f7c96b961b

SHA512
70adc555e2e2c53bc20d1a88118d86ad1e57f00f58a80a80e6f1097180aad748fa59021c405a4b9c382cacf9784d55623bee70cb38ce93f075a047d88ef33cc4

Download Submit
memory/3312-5-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/3312-6-0x00000000006E0000-0x00000000006E2000-memory.dmp

Filesize
8KB

Download
memory/3312-7-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/3736-0-0x0000000074C70000-0x0000000074CB4000-memory.dmp

Filesize
272KB

Download