b43bfe05b6e5b31677baac3fa43ac83ff33709231fce475e87d28b71d35be6ab

General

Target

2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe
Size

272KB
MD5

2354e9e53917c05abb989bba1c4d1cf1
SHA1

0fe84be9851258bfc1ba583ab507d44b149640c0
SHA256

b43bfe05b6e5b31677baac3fa43ac83ff33709231fce475e87d28b71d35be6ab
SHA512

9221d0e3390b6d4121a53884a2806281050376bc9f9084ac346158038693553fac7e2b10f38068cde936ea94782e74b0840486d431fdf0544f44d848745e69ea
SSDEEP

6144:gqXcMZjfw9Ed6ydeSWST8MqP/IaDK9je:FXcMZjNkydl3bqP/IaDb

Score

8^/10

discovery evasion persistence trojan upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Yneelurwjf = "C:\\Windows\\SysWOW64\\nlaapik.exe"	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	nlaapik.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2004	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	nlaapik.exe

Loads dropped DLL 2 IoCs

pid	Process
2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe
2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral1/memory/2344-2-0x0000000000360000-0x00000000003F6000-memory.dmp	upx
behavioral1/memory/2344-5-0x0000000000360000-0x00000000003F6000-memory.dmp	upx
behavioral1/memory/2344-7-0x0000000000360000-0x00000000003F6000-memory.dmp	upx
behavioral1/memory/2344-6-0x0000000000360000-0x00000000003F6000-memory.dmp	upx
behavioral1/memory/2344-29-0x0000000000360000-0x00000000003F6000-memory.dmp	upx
behavioral1/memory/2344-36-0x0000000000360000-0x00000000003F6000-memory.dmp	upx

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nlaapik.exe	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\nlaapik.exe	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2832	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe
2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2740	nlaapik.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2740	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	28
PID 2344 wrote to memory of 2740	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	28
PID 2344 wrote to memory of 2740	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	28
PID 2344 wrote to memory of 2740	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	28
PID 2740 wrote to memory of 2832	2740	nlaapik.exe	30
PID 2740 wrote to memory of 2832	2740	nlaapik.exe	30
PID 2740 wrote to memory of 2832	2740	nlaapik.exe	30
PID 2740 wrote to memory of 2832	2740	nlaapik.exe	30
PID 2344 wrote to memory of 2004	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	32
PID 2344 wrote to memory of 2004	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	32
PID 2344 wrote to memory of 2004	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	32
PID 2344 wrote to memory of 2004	2344	2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\nlaapik.exe
  C:\Windows\SysWOW64\nlaapik.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - Gathers network information
    PID:2832
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins8696.bat "C:\Users\Admin\AppData\Local\Temp\2354e9e53917c05abb989bba1c4d1cf1_JaffaCakes118.exe"
  2⤵
  - Deletes itself
  PID:2004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

2

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~unins8696.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
\Windows\SysWOW64\nlaapik.exe

Filesize
118KB

MD5
3c9956a16e021dc0e577a0a38562a153

SHA1
8f57c9a166e947d7672ab8e1aed60ede618938d8

SHA256
f64fa909609e28fc5e9ef8cafa429c558aeb261a2d53a51d68ce62b91664a1a4

SHA512
fbe9449e136c1303afd9495bbe8a25416d6a2a8cb505f3476549cd9e3e415863ad94558c40916bb7c42a13abaa7674113c9a6b889524e5e5b6906009d33c8ce0

Download Submit
memory/2344-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2344-1-0x0000000000220000-0x0000000000254000-memory.dmp

Filesize
208KB

Download
memory/2344-2-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download
memory/2344-5-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download
memory/2344-7-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download
memory/2344-6-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download
memory/2344-8-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2344-29-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download
memory/2344-36-0x0000000000360000-0x00000000003F6000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads