8a4d0b75db799d9b3e855faf72d295eb3183347144880ddda2ee91f76349f729

General

Target

776504f15a61288ba271352d4447165c_JaffaCakes118.exe
Size

686KB
MD5

776504f15a61288ba271352d4447165c
SHA1

ae9923af47ec1d01c2e9f9fa11920ea8c471e13e
SHA256

8a4d0b75db799d9b3e855faf72d295eb3183347144880ddda2ee91f76349f729
SHA512

68349722d9f71ed3e6c783df208dc63d7139a0db18cc45a0b51041160b28a8388b6f42d4a01d53cf7b5d497faa48d5df7ab6de0fbdacd08bc92b1d39efd9e32c
SSDEEP

12288:6GCO1xf5EepJZrPy4R8O4NXWo+/mw/daBUaVp/34S5zaqCdeYCX:6F2F5ESPlVBiydatnf35etK

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\c.sys\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\c.sys"	rsru.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	rsru.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	rsru.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2692-0-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
behavioral2/files/0x00080000000234e8-4.dat	upx
behavioral2/memory/4920-8-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
behavioral2/memory/2692-7-0x0000000000400000-0x00000000004FE000-memory.dmp	upx
behavioral2/memory/4920-26-0x0000000000400000-0x00000000004FE000-memory.dmp	upx

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 3 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	776504f15a61288ba271352d4447165c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rsru.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4920	rsru.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	rsru.exe
Token: SeLoadDriverPrivilege	4920	rsru.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4920	rsru.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4920	rsru.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4920	rsru.exe
4920	rsru.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 4920	2692	776504f15a61288ba271352d4447165c_JaffaCakes118.exe	84
PID 2692 wrote to memory of 4920	2692	776504f15a61288ba271352d4447165c_JaffaCakes118.exe	84
PID 2692 wrote to memory of 4920	2692	776504f15a61288ba271352d4447165c_JaffaCakes118.exe	84
PID 4920 wrote to memory of 2572	4920	rsru.exe	94
PID 4920 wrote to memory of 2572	4920	rsru.exe	94
PID 4920 wrote to memory of 2572	4920	rsru.exe	94

C:\Users\Admin\AppData\Local\Temp\776504f15a61288ba271352d4447165c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\776504f15a61288ba271352d4447165c_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Users\Admin\AppData\Local\Temp\rsru.exe
  C:\Users\Admin\AppData\Local\Temp\rsru.exe -run
  2⤵
  - Sets service image path in registry
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\rsru.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rsru.bat

Filesize
135B

MD5
b1e16d8e4b31ae31cc2366ba3f06eb74

SHA1
bd9fc977f74a24a2d43213b30018d2e96a9606b5

SHA256
2aaa59a6d6007419f4cf774c124f522bf6665e5441218027749a2aea984c60a4

SHA512
501f99af23d7d48b337df7cb903227dcb5ebc7956a10d19447fd00583f98f2fe98b158a901c35214252e07206a901b874d758a53c36adb7e691679d2e59d1fb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\rsru.exe

Filesize
1.2MB

MD5
9719c9dccfbcb530185c4fcf1e69fcaf

SHA1
bcb89561c1987c7deafba2a0f59f2ec3f2423301

SHA256
bad712eedc7663a1adfb24147ca2b4e33ac22eef9f3028cfbe7132d74b3007c6

SHA512
b3ca8d9b65576c23a290c2e61d69e35d73f9233c25605b4c35ddb498ad916b10b2dac2a74f6a237554146d1ea7b562295f3984909ff06468fa5b6d18f9ced026

Download Submit
memory/2692-0-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2692-1-0x0000000002260000-0x0000000002261000-memory.dmp

Filesize
4KB

Download
memory/2692-7-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/4920-8-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/4920-10-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/4920-26-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/4920-28-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads