8e1d6555a8d4a73a3941fc328f64098a2370932398ecaa1a988e5faddcc06cd7

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 14:07

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General

Target

420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe
Size

81KB
MD5

420031c776d3c49bf7d93f53287de1e6
SHA1

6594859eab3911b158e4e56b9ed0744ca3105c8c
SHA256

8e1d6555a8d4a73a3941fc328f64098a2370932398ecaa1a988e5faddcc06cd7
SHA512

6c6f7f1352340e0a74d7ed9c67c6fe064d3b8ee703414eb3583a9110c75160b573a89c6a343eb65cbbe743f64235fb1d213b53a17d957006c34a53f9760d5d1d
SSDEEP

1536:b24R1T8VcM4uAx8n1lzITW7u0cBzWMO4z/VZ0SlnOBRpON:7R14WP81lhYBiBs/cSlO

Score

7^/10

adware stealer upx

Malware Config

Signatures

Loads dropped DLL 4 IoCs

pid	Process
2788	rundll32.exe
2788	rundll32.exe
2788	rundll32.exe
2788	rundll32.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2116-0-0x0000000000400000-0x0000000000430000-memory.dmp	upx
behavioral1/memory/2116-3-0x0000000000400000-0x0000000000430000-memory.dmp	upx
behavioral1/files/0x0005000000011c2f-4.dat	upx
behavioral1/memory/2788-12-0x0000000010000000-0x000000001002A000-memory.dmp	upx
behavioral1/memory/2788-11-0x0000000010000000-0x000000001002A000-memory.dmp	upx
behavioral1/memory/2788-10-0x0000000010000000-0x000000001002A000-memory.dmp	upx
behavioral1/memory/2788-9-0x0000000010000000-0x000000001002A000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1F6581D5-AA53-4b73-A6F9-41420C6B61F1}	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.dll	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1F6581D5-AA53-4b73-A6F9-41420C6B61F1}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1F6581D5-AA53-4b73-A6F9-41420C6B61F1}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1F6581D5-AA53-4b73-A6F9-41420C6B61F1}\InprocServer32\ = "C:\\Windows\\SysWow64\\420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{1F6581D5-AA53-4b73-A6F9-41420C6B61F1}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30
PID 2116 wrote to memory of 2788	2116	420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Windows\system32\420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.dll",inject
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\420031c776d3c49bf7d93f53287de1e6_JaffaCakes118.dll

Filesize
60KB

MD5
9a583258085184fd43a7d4a8b2618877

SHA1
3633ffaecebc22abf4b1f2a22487e861e07e64ee

SHA256
e3741242dd3e3a16122a142d794df79bde06bcc2d18e54956a7859c68e506f17

SHA512
2b48da2eb9e39a5d5167dba904be97e8109ce46d278e693fab631d512582682c59f653c21103ada177e1f96c7a53a5b717c6944e00dc3d64c7e23885c8824e16

Download Submit
memory/2116-0-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2116-3-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2788-12-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2788-11-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2788-10-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download
memory/2788-9-0x0000000010000000-0x000000001002A000-memory.dmp

Filesize
168KB

Download