c93c55754f263b2e2263173b5e1b71e80706e7cec9a387dc3b640786b61eff15

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
17/08/2024, 21:07

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General

Target

a424ccd8db394970c4b32c5bb357f0b2_JaffaCakes118.dll
Size

138KB
MD5

a424ccd8db394970c4b32c5bb357f0b2
SHA1

88911ea1b19480d79f0ad734fa45baa8aca8ae43
SHA256

c93c55754f263b2e2263173b5e1b71e80706e7cec9a387dc3b640786b61eff15
SHA512

95d939d92d98add6cd16f62542417a1df44de506e7fc55716876c1c921b9335eaecebfa42b06f8311d9ad1ee4fa61aa9a146095c86a261a6114837792366d1e3
SSDEEP

3072:3VGBtkxriczgcG9jdQgdVnZnVSyQ4dMQu8N0iN2Mk6KhKtxFO2:30B4HKjdQkdVSy3e18ym2MvF3

Score

10^/10

discovery evasion upx

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0"	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1960-0-0x0000000010000000-0x000000001001A000-memory.dmp	upx
behavioral1/memory/1960-11-0x0000000010000000-0x000000001001A000-memory.dmp	upx

Enumerates connected drives 3 TTPs 2 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)	\??\E:	rundll32.exe
File opened (read-only)	\??\N:	rundll32.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 28 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4c00310000000000e558b46d100041646d696e00380008000400efbee5583069e558b46d2a00000030000000000004000000000000000000000000000000410064006d0069006e00000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 7400310000000000e55830691100557365727300600008000400efbeee3a851ae55830692a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 5200310000000000e5583069122041707044617461003c0008000400efbee5583069e55830692a000000eb0100000000020000000000000000000000000000004100700070004400610074006100000016000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1960	rundll32.exe
1960	rundll32.exe
1960	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	rundll32.exe
Token: SeShutdownPrivilege	1252	Explorer.EXE
Token: SeShutdownPrivilege	1252	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1040 wrote to memory of 1960	1040	rundll32.exe	30
PID 1960 wrote to memory of 1252	1960	rundll32.exe	21
PID 1960 wrote to memory of 292	1960	rundll32.exe	31
PID 1960 wrote to memory of 292	1960	rundll32.exe	31
PID 1960 wrote to memory of 292	1960	rundll32.exe	31
PID 1960 wrote to memory of 292	1960	rundll32.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1252
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a424ccd8db394970c4b32c5bb357f0b2_JaffaCakes118.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1040
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a424ccd8db394970c4b32c5bb357f0b2_JaffaCakes118.dll,#1
    3⤵
    - Modifies visibility of file extensions in Explorer
    - Enumerates connected drives
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1960
  - - C:\Windows\SysWOW64\explorer.exe
      explorer C:\Users\Admin\AppData
      4⤵
      System Location Discovery: System Language Discovery
      PID:292

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/884-13-0x0000000003A90000-0x0000000003AA0000-memory.dmp

Filesize
64KB

Download
memory/1252-9-0x00000000025D0000-0x00000000025D1000-memory.dmp

Filesize
4KB

Download
memory/1960-0-0x0000000010000000-0x000000001001A000-memory.dmp

Filesize
104KB

Download
memory/1960-2-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1960-3-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1960-8-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

Filesize
4KB

Download
memory/1960-7-0x0000000076FAF000-0x0000000076FB0000-memory.dmp

Filesize
4KB

Download
memory/1960-6-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1960-4-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1960-12-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1960-11-0x0000000010000000-0x000000001001A000-memory.dmp

Filesize
104KB

Download