731fb67573991adb1b9c76cd6ff7104dd9a57fa057fae6b3d0cd5cb04021edf3

General

Target

877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
Size

354KB
MD5

877e1836ef0722467e1f0e60c2b17875
SHA1

a5069cb0f3431eb3c32806e5322090725f65f600
SHA256

731fb67573991adb1b9c76cd6ff7104dd9a57fa057fae6b3d0cd5cb04021edf3
SHA512

caf48313b6e9f1e85cff67d91416e09f9c08e0596a0c756985a475badf9dbb682a3c8db8c7b6d5548c9fbe0c98dcbd7b2b5ef2e331795119f47baa5b9a801070
SSDEEP

6144:bgOviFZ3FvaZGCbuFaplyBWa2cf07oPxl9XzLDGO71iKFGOso/Qhm5Vsr8:b/iFdFv0GCbu9Wa2cf0cxLXjH4KF+lhm

Score

8^/10

discovery evasion persistence trojan

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	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Udcfryek = "C:\\Windows\\SysWOW64\\cemapib.exe"	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	cemapib.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	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	cemapib.exe

Executes dropped EXE 1 IoCs

pid	Process
3356	cemapib.exe

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	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\cemapib.exe	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\cemapib.exe	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe

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 4 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	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cemapib.exe

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
1380	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3356	cemapib.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 3356	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe	86
PID 2548 wrote to memory of 3356	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe	86
PID 2548 wrote to memory of 3356	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe	86
PID 2548 wrote to memory of 2588	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe	88
PID 2548 wrote to memory of 2588	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe	88
PID 2548 wrote to memory of 2588	2548	877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe	88
PID 3356 wrote to memory of 1380	3356	cemapib.exe	90
PID 3356 wrote to memory of 1380	3356	cemapib.exe	90
PID 3356 wrote to memory of 1380	3356	cemapib.exe	90

C:\Users\Admin\AppData\Local\Temp\877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\cemapib.exe
  C:\Windows\SysWOW64\cemapib.exe
  2⤵
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3356
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:1380
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins1546.bat "C:\Users\Admin\AppData\Local\Temp\877e1836ef0722467e1f0e60c2b17875_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2588

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

3

T1012

System Information Discovery

5

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\~unins1546.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Users\Adminxplore.exe

Filesize
89B

MD5
2bd83f0dd1740fff26d071dcdd59af56

SHA1
221e9e64a79255053a9e4da65957a7bdd6bc045b

SHA256
70a676e21716581858de2753ea5eec8befe6741ed299216f65a13c3853805c05

SHA512
fe632b63b8b850cc83f0eb2a114de60693ec0dd8b62fe8f0938b42526557889f48357da0ca3bb06bed1ad68562280023a69b54d93cff8b7266bb8ebb63ac903c

Download Submit
C:\Windows\SysWOW64\cemapib.exe

Filesize
120KB

MD5
f74ca665c2d68953845374fb2da5a9ae

SHA1
416c8a7937c713a2c220f38c86636d710cbb57ae

SHA256
0184e1f737544eb028d53fe82dbb29520eb36c46cdbc1f2fcb7323b09f30ec12

SHA512
01e1fe6d771916dc0efb4a16a2815a6769fd78e17822028b68f129724c046d4d57553337adb2196b8087ed09bd5325b9221fea0dc877760f75be60648e28abba

Download Submit
memory/2548-0-0x0000000000412000-0x00000000004A1000-memory.dmp

Filesize
572KB

Download
memory/2548-1-0x0000000002250000-0x00000000022E3000-memory.dmp

Filesize
588KB

Download
memory/2548-5-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/2548-26-0x0000000000412000-0x00000000004A1000-memory.dmp

Filesize
572KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads