09c32452aa4f08d50293ffddf107b936d7900f8208abc3f50c6ad578662668fc

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
21-01-2025 20:11

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General

Target

JaffaCakes118_0731356f7ba2c1f0a01cdbe7757f535a.dll
Size

340KB
MD5

0731356f7ba2c1f0a01cdbe7757f535a
SHA1

1bb8c35001bea7395584a7aff7e135484c9f172d
SHA256

09c32452aa4f08d50293ffddf107b936d7900f8208abc3f50c6ad578662668fc
SHA512

d51df401d50539584d976c04e11ee57e0107781fb7dbca64ce09cf444fad59f2045c8eac3e89172b23aec0c388af8abdc39376ce885183bfffebee36cc2a371a
SSDEEP

6144:sl9XgnzxOP/sFR2h+9q1kih6ibUxrp3/vIyRHjp3C0xBOqxsuV0fSX2ioS40h7+o:slCzcMg+9YkDiQ3/QEHxsvfSXjThpNnb

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1112	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/0x000a000000023c49-3.dat	upx
behavioral2/memory/1112-5-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/1112-7-0x0000000000400000-0x000000000046E000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2916	1112	WerFault.exe	84
2920	3984	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 4248 wrote to memory of 3984	4248	rundll32.exe	83
PID 4248 wrote to memory of 3984	4248	rundll32.exe	83
PID 4248 wrote to memory of 3984	4248	rundll32.exe	83
PID 3984 wrote to memory of 1112	3984	rundll32.exe	84
PID 3984 wrote to memory of 1112	3984	rundll32.exe	84
PID 3984 wrote to memory of 1112	3984	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0731356f7ba2c1f0a01cdbe7757f535a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0731356f7ba2c1f0a01cdbe7757f535a.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3984
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1112
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 264
      4⤵
      Program crash
      PID:2916
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 612
    3⤵
    - Program crash
    PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1112 -ip 1112
1⤵
PID:1696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3984 -ip 3984
1⤵
PID:2588

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
105KB

MD5
9b49fec7e03c33277f188a2819b8d726

SHA1
a7b6b4a0ecbeab9075c3e36ec2586ce8debbbc4f

SHA256
9d3a78f72dbd7351a999d6fd6f60b0c6ba79bc4279a347fd590af94a0224afad

SHA512
049a0971913562ca8a134ac889d4750c71d89fe070fadcb06dfc49401f1b9b508275921e55f3f27a31f34d520e96784d4a50959fa1aab6bad878e9e5ea61755d

Download Submit
memory/1112-5-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1112-6-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/1112-7-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3984-0-0x0000000074C60000-0x0000000074CB5000-memory.dmp

Filesize
340KB

Download
memory/3984-8-0x0000000074C60000-0x0000000074CB5000-memory.dmp

Filesize
340KB

Download