a9b94093b5b8d953f43259f470b79a56b0582fd856e56905f831d5d94719ac93

Analysis

max time kernel
146s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08/10/2024, 21:40

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General

Target

25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
Size

9.1MB
MD5

25d7c9ba82bd909ce4224177a87424c4
SHA1

cdbe6272122b68ec2d666c3068733b3f17c1941f
SHA256

a9b94093b5b8d953f43259f470b79a56b0582fd856e56905f831d5d94719ac93
SHA512

0b2f205f048f7c4e691ded300176fbdf40b1413f998bc85eb1fa1d5d239d8c55a92dd65965350f0ca1ab9ae5cbfea81a0ffb24a3df715ba5f5a86b2d2012cfa5
SSDEEP

98304:PE2cJIMzKpXOMGQ+IM/E2cJIMzKpIkMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMu:PnwI2ly+IunwI24I2ly8

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"	25d7c9ba82bd909ce4224177a87424c4_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	25d7c9ba82bd909ce4224177a87424c4_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	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2844	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
2780	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
2780	25d7c9ba82bd909ce4224177a87424c4_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)	\??\A:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\T:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\X:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\E:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\H:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\U:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\I:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\P:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\B:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\J:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\R:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\S:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\O:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\M:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\I:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\G:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\K:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\Q:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\Y:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\L:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\N:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\V:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\W:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\Z:	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.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	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened for modification	C:\AUTORUN.INF	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File opened for modification	F:\AUTORUN.INF	HelpMe.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\HelpMe.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	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HelpMe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2844	2780	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe	31
PID 2780 wrote to memory of 2844	2780	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe	31
PID 2780 wrote to memory of 2844	2780	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe	31
PID 2780 wrote to memory of 2844	2780	25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\25d7c9ba82bd909ce4224177a87424c4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\25d7c9ba82bd909ce4224177a87424c4_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:2780
- 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
  - System Location Discovery: System Language Discovery
  PID:2844

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-1-5-21-1488793075-819845221-1497111674-1000\desktop.ini.exe

Filesize
9.1MB

MD5
2c0f67f4cfcaa333a5903f9013cd683b

SHA1
373a1d4a9688bc99047cf361998381b90a534111

SHA256
a3705c2d7f62ec850dd1566598b8c6816d93575648dd11a91b94da706f6eb75c

SHA512
2c08f549e4ffa6ef9ef00a717c4143b6ede30531c151a0ae908e58d48e4f040533cc2f52efa45f67066e09341c3dc0aeec7cc519a386a97f782e9e3229fa4d24

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

Filesize
1KB

MD5
b0745c4f06c5867c49c7a4597ab5636c

SHA1
08acb7568603103112bcff97645c55f7250e5bc4

SHA256
863600b96e5d4a5a49eff2d5a299d7d3b760c1368003fba0e41c2a1d5bf8d501

SHA512
3b7826290d5a37887200f963e97e82b735cbb890c9e563b8970d04e3022a2220c06adbf033b0e4ba37661cc61d6d46d44a491bcb2302223b4070835fa25f4adf

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

Filesize
950B

MD5
ecc2498e24381f5579565ada901b4eeb

SHA1
0fad75195ba36cdb013f8ee567b50d9e3099784b

SHA256
d473ed199676eaf1273bae51df47ad5beb5b7b75965c6b32dcf01a512493e923

SHA512
6a1a828003759a45070f454565f88bbfdd064b3a2ead42b3b821eecb617ead1f10af3cd1a784b27028c906be331a32e94bdfdde4a050953945a991e139a3366b

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
9.1MB

MD5
25d7c9ba82bd909ce4224177a87424c4

SHA1
cdbe6272122b68ec2d666c3068733b3f17c1941f

SHA256
a9b94093b5b8d953f43259f470b79a56b0582fd856e56905f831d5d94719ac93

SHA512
0b2f205f048f7c4e691ded300176fbdf40b1413f998bc85eb1fa1d5d239d8c55a92dd65965350f0ca1ab9ae5cbfea81a0ffb24a3df715ba5f5a86b2d2012cfa5

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
9.1MB

MD5
60f16d896ad91156912e4728018296eb

SHA1
8687666190cbd4d514c8b9c1b7a09512f4e15256

SHA256
6fb66817731c4e03f3a56db0197c1c841931fe90b26ec9691ec4ddd5092a30a2

SHA512
5ece96921df6529d84db4fb44b4e10ac160003a176ca0429176a8af8b8f63b39a268e13e2ceb00b35f754892030be873b3a63be30c1158b05ba0de8c610c88f6

Download Submit
memory/2780-0-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2844-9-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2844-228-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads