f51fc2e266418e158642a64ab4c8a7a246d90520de1e7bc119a6e8bbde989ae3

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 05:52

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General

Target

d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Size

92KB
MD5

d1386a15b89e14bdfcf4262857603596
SHA1

7b008ebac861c1ba141eaff3090a3806405e6474
SHA256

f51fc2e266418e158642a64ab4c8a7a246d90520de1e7bc119a6e8bbde989ae3
SHA512

59f61c6fa4bc5e805097de7f70810864fec4a31cdbcdb949dad1b41930358c8fb34185e1a173619d699a7653b68f14526c50261e0b1ff4bdf5da23532f474679
SSDEEP

768:g9/OG/Vbv2gV99m+Yhnvo29b3fnN0zsROESLkKpyB69vgW:2OGp2gTV4ZbPn2zsRO/aB69

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\uvjbclsk.dll = "{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}"	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe

Loads dropped DLL 1 IoCs

pid	Process
3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\uvjbclsk.tmp	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\uvjbclsk.tmp	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe

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	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32\ = "C:\\Windows\\SysWow64\\uvjbclsk.dll"	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32\ThreadingModel = "Apartment"	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 2392	3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe	95
PID 3580 wrote to memory of 2392	3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe	95
PID 3580 wrote to memory of 2392	3580	d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe	95

C:\Users\Admin\AppData\Local\Temp\d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d1386a15b89e14bdfcf4262857603596_JaffaCakes118.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\F107.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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:\Users\Admin\AppData\Local\Temp\F107.tmp.bat

Filesize
207B

MD5
e75c78d447860e3e26de77644afc14a5

SHA1
948b5d9bd43ab443de29277e2b1f11b6f3f26714

SHA256
a6ef392374c076fb342f179f1acdce382ea00ec99ade81dc4812c5c42b80c3c5

SHA512
d7af59a29c3c193e1d3652ec5cfa200b17bdfd5a3d4e47060eaa7077586607797a5b25a70c965f75b00b7b0dcda439b83043b268c54fd6d27e01daf1445bd4fb

Download Submit
C:\Windows\SysWOW64\uvjbclsk.dll

Filesize
2.4MB

MD5
adaf9c03b3b8d864bef0fa612165bb7d

SHA1
14c61539a83bb00c7fc86f0bdd2f20c4e8c2ff5c

SHA256
837ed0886223837a743ad2fb7fc0c38bf679d9cb09d554d5c48f7985eb8c2812

SHA512
3d96ce52fd64224e495878ed6be6f6eeb4fea33aad6904cd2b841d64f96e787c1a5fb628cd8ab7b500895f5c1fbf2b3cb36d388aa992cc2fa93023a303f95d24

Download Submit
memory/3580-6-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download
memory/3580-11-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download