41c4008040780a6d82c325d0d8115ffd188203595a4b164ceba956878e3efcea

Analysis

max time kernel
93s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
30/01/2025, 14:17

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General

Target

JaffaCakes118_639f033f6712376c3127d7e391c64a6e.dll
Size

152KB
MD5

639f033f6712376c3127d7e391c64a6e
SHA1

54ae750743121c768e78f1f5b5bf5dbed9e2655a
SHA256

41c4008040780a6d82c325d0d8115ffd188203595a4b164ceba956878e3efcea
SHA512

ee9e39a15c2faa7651af1f601061ac66667c40853b2f1e2970cb46840bbab0abb46ddeb006cd1b05130cd03b5fba78a80c25ec1b8e3c44a773b6c889a51b8c61
SSDEEP

3072:XdSdQ5T3W24GC09adtRlOusvJckiaJP+BfN1:XdSInoHdtRlXsBckhJP+Vj

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3472	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/0x000a000000023be4-3.dat	upx
behavioral2/memory/3472-4-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/3472-8-0x0000000000400000-0x000000000045D000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3400	3472	WerFault.exe	86
4628	852	WerFault.exe	83

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 208 wrote to memory of 852	208	rundll32.exe	83
PID 208 wrote to memory of 852	208	rundll32.exe	83
PID 208 wrote to memory of 852	208	rundll32.exe	83
PID 852 wrote to memory of 3472	852	rundll32.exe	86
PID 852 wrote to memory of 3472	852	rundll32.exe	86
PID 852 wrote to memory of 3472	852	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_639f033f6712376c3127d7e391c64a6e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:208
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_639f033f6712376c3127d7e391c64a6e.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:852
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3472
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3472 -s 264
      4⤵
      Program crash
      PID:3400
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 608
    3⤵
    - Program crash
    PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3472 -ip 3472
1⤵
PID:2316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 852 -ip 852
1⤵
PID:4804

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

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
115KB

MD5
18a278ae0b09685809131a3db93fa729

SHA1
4be15cabab2fb0bba9729805c0992039f6b2f79d

SHA256
e6a62fc180bd2ea1fe97fdb185976e82b2ba65f99aedcc0bd22a6f9e15f0660e

SHA512
c485b54e23a8522d2a9cec24532ddd0deb8eee12a592d817a0d688c044fc67c5dd56d89b5d8d6c0e81817357220c3557d67d0f2bdb0731db05ec2ee62ef3aac1

Download Submit
memory/852-1-0x000000006D180000-0x000000006D1A6000-memory.dmp

Filesize
152KB

Download
memory/852-9-0x000000006D180000-0x000000006D1A6000-memory.dmp

Filesize
152KB

Download
memory/3472-4-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3472-6-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/3472-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download