b515a046f9a5330f33127d7c2c06330d60455411035488e221ef48fe80a841d0

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
27/07/2024, 16:27

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General

Target

78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe
Size

78KB
MD5

78c890aa534cad39243f187b4dfc320b
SHA1

5266eaa937701a74d9855d9c75dfca2641866233
SHA256

b515a046f9a5330f33127d7c2c06330d60455411035488e221ef48fe80a841d0
SHA512

846443f12c3fb4a8c1d55e69159d405a2a5de26c2a035deefdd37dfef02967a60b4a1e3a2e5a3eb17174d047e0d6f3497ff952c8c37d3138c31b2be08b23d6f4
SSDEEP

1536:oRZ91d7n9FmfnhnKn+YvUtBayHbOq9wmskMMMl:oRP1d7n9FgK+YvUtgyHbOq6V

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2856	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2776	rifzsk.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rifzsk.exe	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\rifzsk.exe	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe

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	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rifzsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rifzsk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rifzsk.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2724	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2856	2724	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2856	2724	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2856	2724	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe	31
PID 2724 wrote to memory of 2856	2724	78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\78c890aa534cad39243f187b4dfc320b_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\78C890~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2856

C:\Windows\SysWOW64\rifzsk.exe
C:\Windows\SysWOW64\rifzsk.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

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

C:\Windows\SysWOW64\rifzsk.exe

Filesize
78KB

MD5
78c890aa534cad39243f187b4dfc320b

SHA1
5266eaa937701a74d9855d9c75dfca2641866233

SHA256
b515a046f9a5330f33127d7c2c06330d60455411035488e221ef48fe80a841d0

SHA512
846443f12c3fb4a8c1d55e69159d405a2a5de26c2a035deefdd37dfef02967a60b4a1e3a2e5a3eb17174d047e0d6f3497ff952c8c37d3138c31b2be08b23d6f4

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