f522023467d3b9cf1377192c6a2764bef8b8304613d79ffdf3c6be614f78e740

Analysis

max time kernel
145s
max time network
125s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
15/04/2024, 16:22

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General

Target

f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
Size

8.8MB
MD5

f17ad5147ccfba015adfe870a18021f7
SHA1

dec394f932c74a938be46971ec4a1de76370e8c3
SHA256

f522023467d3b9cf1377192c6a2764bef8b8304613d79ffdf3c6be614f78e740
SHA512

7256e963a2a4032a6c4f74d1b1c49c75463c83269187dc34691f2f545c09da6d6826d9bb447a55a125befa67b8f4747df17f97ce7eb66074bc4d142ab2154c67
SSDEEP

98304:mE2ji0iIMzKpXOMGQjduNKhcqjOTpC11sw423fu5TSXdBfz9vKjA:mn+0iI2ly0cOTM1St2GJSXvgjA

Score

10^/10

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"	f17ad5147ccfba015adfe870a18021f7_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	f17ad5147ccfba015adfe870a18021f7_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	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2528	HelpMe.exe

Loads dropped DLL 2 IoCs

pid	Process
1736	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
1736	f17ad5147ccfba015adfe870a18021f7_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)	\??\Q:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\R:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\H:	HelpMe.exe
File opened (read-only)	\??\J:	HelpMe.exe
File opened (read-only)	\??\Z:	HelpMe.exe
File opened (read-only)	\??\W:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\Z:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\W:	HelpMe.exe
File opened (read-only)	\??\E:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\G:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\J:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\K:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\O:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\N:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\B:	HelpMe.exe
File opened (read-only)	\??\M:	HelpMe.exe
File opened (read-only)	\??\S:	HelpMe.exe
File opened (read-only)	\??\A:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\P:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\S:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\T:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\T:	HelpMe.exe
File opened (read-only)	\??\X:	HelpMe.exe
File opened (read-only)	\??\H:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\L:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\K:	HelpMe.exe
File opened (read-only)	\??\R:	HelpMe.exe
File opened (read-only)	\??\U:	HelpMe.exe
File opened (read-only)	\??\G:	HelpMe.exe
File opened (read-only)	\??\N:	HelpMe.exe
File opened (read-only)	\??\P:	HelpMe.exe
File opened (read-only)	\??\I:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\V:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\X:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\Y:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\E:	HelpMe.exe
File opened (read-only)	\??\Q:	HelpMe.exe
File opened (read-only)	\??\V:	HelpMe.exe
File opened (read-only)	\??\Y:	HelpMe.exe
File opened (read-only)	\??\M:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\U:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\A:	HelpMe.exe
File opened (read-only)	\??\L:	HelpMe.exe
File opened (read-only)	\??\O:	HelpMe.exe
File opened (read-only)	\??\B:	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened (read-only)	\??\I:	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	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened for modification	C:\AUTORUN.INF	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File opened for modification	F:\AUTORUN.INF	HelpMe.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\HelpMe.exe	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File opened for modification	C:\Windows\SysWOW64\HelpMe.exe	HelpMe.exe
File created	C:\Windows\SysWOW64\notepad.exe.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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2528	HelpMe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2528	1736	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe	28
PID 1736 wrote to memory of 2528	1736	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe	28
PID 1736 wrote to memory of 2528	1736	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe	28
PID 1736 wrote to memory of 2528	1736	f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\f17ad5147ccfba015adfe870a18021f7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f17ad5147ccfba015adfe870a18021f7_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
- Suspicious use of WriteProcessMemory
PID:1736
- 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
  - Suspicious behavior: EnumeratesProcesses
  PID:2528

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

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-2248906074-2862704502-246302768-1000\desktop.ini.exe

Filesize
8.8MB

MD5
c1320fbe29507432204a3201e0ada744

SHA1
8ccacc5cb841a75490bc9dbda1fcbf8708efc13e

SHA256
1ec60db377fe3a7606b7dbad5621630d9107d5b79f975d7a51282f7880537505

SHA512
e5f83c6a265ce0739b9fe55ef4521ea33347b6383c940df8fc08169ae4a314edc488cb0d8c9628229bda7b085deafe64d6e7836ab6f214d4c7fe358ca62f5a59

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

Filesize
1KB

MD5
39a9e93f707316026fc0df22c9bc8aa4

SHA1
fe0bfb562eb4902d88563f2468e91245049644d7

SHA256
a6cea0b98b78cee6086a307deb0eb8dce9367b0469ac0a006a751ade9a00e470

SHA512
d9e338e726d8d5debe6ba211d50eb0df0e64f8a5768161ddf3b764597d3deacf0c44960414c61c8f32d9b1e7d51088856e0ca0ff2bacac882a27f0f98d1fde9c

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

Filesize
950B

MD5
4939fb1b771bf3e26bb4c24466470a60

SHA1
0f8b33cc142059bfd0387edb46b428b7e0296e7d

SHA256
a3866d49cdc79e6955d5b2c35dbeafea0eb254d4b27e583cdb6caeb110a6816e

SHA512
6485ec50c7341b10586195716ba11f9ebcd1134dc91de52d21ee7cfd9efa82b8729030620bf102a199a1f36e6cf239f3f86738ad475bc58ab2ecfd9f5c1feeeb

Download Submit
F:\AUTORUN.INF

Filesize
145B

MD5
ca13857b2fd3895a39f09d9dde3cca97

SHA1
8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

SHA256
cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

SHA512
55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

Download Submit
F:\AutoRun.exe

Filesize
8.8MB

MD5
f17ad5147ccfba015adfe870a18021f7

SHA1
dec394f932c74a938be46971ec4a1de76370e8c3

SHA256
f522023467d3b9cf1377192c6a2764bef8b8304613d79ffdf3c6be614f78e740

SHA512
7256e963a2a4032a6c4f74d1b1c49c75463c83269187dc34691f2f545c09da6d6826d9bb447a55a125befa67b8f4747df17f97ce7eb66074bc4d142ab2154c67

Download Submit
\Windows\SysWOW64\HelpMe.exe

Filesize
8.8MB

MD5
fc80a113308271d5fce89151560da5fe

SHA1
ac86d68c6538b20014fcdd6124fd7e829f58ddb7

SHA256
768d1aa5e4176e5b3bd0906d64430039368b3209ebcd2808166b6f03d436b9ff

SHA512
c0c95209005070b99304812fd1389e84c70fd0b1cca9ede6a2cc8dd3b41aa339c2f1de46f1b73ffcb0ebfbaa66a200561ff362efc9595aa0f341e7453f586d38

Download Submit
memory/1736-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2528-12-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download