2a9bfcf1b9169fae213909531a5b6f1c15d76c1b6df6d81798141af20079895d

Analysis

max time kernel
148s
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
01-01-2025 09:04

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General

Target

JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll
Size

202KB
MD5

4f20ac051deba518c19db4227bcf3800
SHA1

37d07ae514e421b5b5ed422dc6233bbedac3dd89
SHA256

2a9bfcf1b9169fae213909531a5b6f1c15d76c1b6df6d81798141af20079895d
SHA512

45bcffc7814fe173637cc2f6e1aed1a1208716252400b5f2d8322a7d0b8e10a50b90674449ba61268312b75387dbee21105968577dbd710635cc6436f7e80b1c
SSDEEP

6144:FaHkoSqc0vnf2wmJ6HHn2uyTVxaUuTqvmzB6:oEoSqVfcJCH27huTqOU

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3796	regsvr32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32mgr.exe	regsvr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b71-3.dat	upx
behavioral2/memory/3796-4-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/3796-7-0x0000000000400000-0x000000000045D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
384	3796	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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32mgr.exe

Modifies registry class 45 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\MenuText = "@C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll,-101"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\Implemented Categories\{00021492-0000-0000-C000-000000000046}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand.1\CLSID\ = "{0A4286EA-E355-44FB-8086-AF3DF7645BD9}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand\ = "&Windows Media Player"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\ = "&Windows Media Player"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\ = "IWMPDeskBandDispatch"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand.1\ = "&Windows Media Player"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand\CLSID\ = "{0A4286EA-E355-44FB-8086-AF3DF7645BD9}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\ = "WMPDeskBand 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\ = "IWMPDeskBandDispatch"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\LocalizedString = "@C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll,-101"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\TypeLib\ = "{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\TypeLib\ = "{B6DD1ED6-573F-40FD-99A1-F28D8BF23916}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0A55922C-3B1F-469B-8D0D-B15060499A52}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WMP.DeskBand\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\ProgID\ = "WMP.DeskBand.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0A4286EA-E355-44FB-8086-AF3DF7645BD9}\VersionIndependentProgID\ = "WMP.DeskBand"	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 4564	3672	regsvr32.exe	83
PID 3672 wrote to memory of 4564	3672	regsvr32.exe	83
PID 3672 wrote to memory of 4564	3672	regsvr32.exe	83
PID 4564 wrote to memory of 3796	4564	regsvr32.exe	84
PID 4564 wrote to memory of 3796	4564	regsvr32.exe	84
PID 4564 wrote to memory of 3796	4564	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f20ac051deba518c19db4227bcf3800.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4564
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3796
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 264
      4⤵
      Program crash
      PID:384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3796 -ip 3796
1⤵
PID:3212

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\regsvr32mgr.exe

Filesize
105KB

MD5
d750f3eaa62119b196c2b6daf1c35fb1

SHA1
e83349a2667f0aacb8b48581a0cde6ec43f77722

SHA256
a69ebe4a1e05922e78b554070ad485b28ffaac210622cd27386ba731dde6213e

SHA512
3d0f2289e7eeca27645ebb68a7dd6a59114d4becdae2dbab129a69acdbf4746a096ab5be1bdb225525fa70215250a187cbcf438f7d505c132a763c48a98c558c

Download Submit
memory/3796-4-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3796-6-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/3796-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4564-0-0x0000000075210000-0x0000000075245000-memory.dmp

Filesize
212KB

Download