3f6b4d990e77dafb2d70968340b474341ae516859b5d1967d91dc8cc9132c14d

Analysis

max time kernel
96s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2025 18:52

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General

Target

JaffaCakes118_1a25098d80c3594fa287c0f63180cc0c.dll
Size

828KB
MD5

1a25098d80c3594fa287c0f63180cc0c
SHA1

40dc0a14973413809f014dc566fa4b00aafcfe84
SHA256

3f6b4d990e77dafb2d70968340b474341ae516859b5d1967d91dc8cc9132c14d
SHA512

5252498c80d253c3e1e2e880d4a1958b69369491bfa8e8a38ae7c4dc428d7e5a238da648d3e513370a7079a2c897a65cd1597d45e9f14f4c2a43e8fd6effda85
SSDEEP

24576:m5c8veLwmd4Fo+sjmPSSC92r30MilqTYL7GrV+QZpOoP:ma8veLwmaFo+sjmPSSC92r30MUqTYLCX

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
652	regsvr32Srv.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32Srv.exe	regsvr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b1b-3.dat	upx
behavioral2/memory/652-5-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral2/memory/652-7-0x0000000000400000-0x0000000000441000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1620	652	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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32Srv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 1536	2208	regsvr32.exe	82
PID 2208 wrote to memory of 1536	2208	regsvr32.exe	82
PID 2208 wrote to memory of 1536	2208	regsvr32.exe	82
PID 1536 wrote to memory of 652	1536	regsvr32.exe	83
PID 1536 wrote to memory of 652	1536	regsvr32.exe	83
PID 1536 wrote to memory of 652	1536	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a25098d80c3594fa287c0f63180cc0c.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a25098d80c3594fa287c0f63180cc0c.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1536
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:652
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 652 -s 268
      4⤵
      Program crash
      PID:1620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 652 -ip 652
1⤵
PID:4952

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\regsvr32Srv.exe

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

Download Submit
memory/652-6-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/652-5-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/652-7-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1536-0-0x0000000010000000-0x00000000100E6000-memory.dmp

Filesize
920KB

Download