b244a7ceb423e9bb387b27289b67d6e6a75cbbebf455de16d6d745caa040561f

Analysis

max time kernel
145s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-08-2024 15:43

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General

Target

ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
Size

11.0MB
MD5

ab99ec54288b827051a58ce498b5c53c
SHA1

9f80b7e76f4314eab482e95042dd8ad2f4c0bcb5
SHA256

b244a7ceb423e9bb387b27289b67d6e6a75cbbebf455de16d6d745caa040561f
SHA512

39280818b7dd94f2336747087ffa6c1e9ecd5b0910581be165b9c30d600326211b4ca701b8ca14a32c289c04f16799fd4cd148f4fea1e5f9db274e356d7d81ad
SSDEEP

98304:iE20IMzKpXOMGsIMzKpXOMGQ5IMzKpXOMGQTIMzKpXOMe:in0I2l6I2ly5I2lyTI2lN

Score

10^/10

discovery persistence ransomware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe HelpMe.exe"	HelpMe.exe

Renames multiple (91) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	HelpMe.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2072	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
484	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
484	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe

Enumerates connected drives 3 TTPs 46 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\W:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\X:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\R:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\K:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\O:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\Q:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\V:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\Y:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\A:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\T:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\J:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\N:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\E:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\G:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\L:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\S:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\U:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\B:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\H:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\M:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\I:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\Z:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\P:	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	F:\AUTORUN.INF	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened for modification	C:\AUTORUN.INF	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File opened for modification	F:\AUTORUN.INF	HelpMe.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File created	C:\Windows\SysWOW64\notepad.exe.exe	HelpMe.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\iexplore.exe.exe	HelpMe.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HelpMe.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2072	HelpMe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 484 wrote to memory of 2072	484	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe	30
PID 484 wrote to memory of 2072	484	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe	30
PID 484 wrote to memory of 2072	484	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe	30
PID 484 wrote to memory of 2072	484	ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab99ec54288b827051a58ce498b5c53c_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Loads dropped DLL
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:484
- C:\Windows\SysWOW64\HelpMe.exe
  C:\Windows\system32\HelpMe.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops startup file
  - Executes dropped EXE
  - Enumerates connected drives
  - Drops autorun.inf file
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\$Recycle.Bin\S-1-5-21-2958949473-3205530200-1453100116-1000\desktop.ini.exe

Filesize
11.0MB

MD5
c69f064df73d9f554dc48149fe18e22e

SHA1
4b2f8141ce1f11cdb2fd14b65bc1f4f926a9b7c1

SHA256
8d7eb6a648d0a720747175a4ab2f14ae560d5b192961d2ad4fe129b17e2ffd4a

SHA512
9cd63f171f3c3ab1ffdbe32f4f31fd3cf0501302a28bdf1c44c5dd0e0cb5ec0e6b046185a26a657c176edf7c34b12475b20e4559866b919f517b8742ad32777a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
1KB

MD5
bbbf3cb41dbab4ff03141aa63a726275

SHA1
b22785ad05c9a6c0c7c41f0aeb7a298a9b9cf5c4

SHA256
e7257fbc4233a519e105e651fd8c9d4014db5ac24b9f54a8e5e6bc3025524b9d

SHA512
66a7aee6a266834122a80e74616d99d84193ac33fec288772a81d80698c7de486c21e226b0bbd1dde6a1d989fbd86a5cd7809cf359d2ce2fc36f506110fb53f9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

Filesize
954B

MD5
251c418ec210e1da4f91bb02768684bd

SHA1
9da6ab3572bf4792d6409782a58310e5c243c639

SHA256
d3435b4fdde4d4a9215d5e2672067e3c06f2107222f9ec44f9d0181e5abde585

SHA512
11fd3c43e75b018efab6f45e9fbe581a95115c354dc70c6a648972b380dac6894888630d9db1a2d4175a21eb536a177aaaaa60cf80de7521e99110238c1e8638

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
11.0MB

MD5
ab99ec54288b827051a58ce498b5c53c

SHA1
9f80b7e76f4314eab482e95042dd8ad2f4c0bcb5

SHA256
b244a7ceb423e9bb387b27289b67d6e6a75cbbebf455de16d6d745caa040561f

SHA512
39280818b7dd94f2336747087ffa6c1e9ecd5b0910581be165b9c30d600326211b4ca701b8ca14a32c289c04f16799fd4cd148f4fea1e5f9db274e356d7d81ad

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
11.0MB

MD5
459488a3add8fef6083f0b70a11f68d4

SHA1
e14d8da908b461f68fb97aded3ceaf98dbebbe91

SHA256
9c68406e635c147148d2f5a0373141506bc9fba75dec6e6f3bfc6c4dd788cb8a

SHA512
6dc2467d9918fca9db85266de6d33bdf87a504b2a9909f5cf6f20db0b95c7aedcda1e4599640d7e283ecb64306278c3b16d1b4aaab48a7a91ca377c70f2565f3

Download Submit
memory/484-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2072-9-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/2072-232-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download