fakeav | c4bb02b0dd4fdff7c5479b077e82029160b56c120b4d907aa318d53d384f82e7

General

Target

5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
Size

755KB
MD5

5a19b740945d425b1fd854cedbb5de92
SHA1

71082786ab6a17381bc4a1228b861a5ab4540dce
SHA256

c4bb02b0dd4fdff7c5479b077e82029160b56c120b4d907aa318d53d384f82e7
SHA512

d28c8c066bca2658e009d05d57cbb650b4a22904f9d54d8ce161f4769fddb579a9e2cc58097bf2a7c2a60036e0540f9e3138ec016bdd2091e54099e926e23016
SSDEEP

12288:xoxejOONAM7GUC1Jr+4o628gx2Jw+tP3Jzm8JOSGXCJdw/oX+pd167QhEQO:2xY3NtGUmJr+4Obxd+tPZSZL/oE6EhE

Score

10^/10

fakeav discovery fakeav persistence spyware upx

Malware Config

Signatures

FakeAV, RogueAntivirus
FakeAV or Rogue AntiVirus is a class of malware that displays false alert messages.
fakeav spyware fakeav

FakeAV payload 1 IoCs

fakeav spyware

resource	yara_rule
behavioral2/memory/696-17-0x0000000000400000-0x00000000004C8000-memory.dmp	fakeav

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
548	KeyGen.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE"	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\MSBLT.EXE = "C:\\Windows\\MSBLT.EXE"	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\CSRLT.EXE	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\CSRLT.EXE	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000023cc0-9.dat	upx
behavioral2/memory/548-15-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/548-18-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\KeyGen.exe	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
File created	C:\Windows\MSBLT.EXE	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
File opened for modification	C:\Windows\MSBLT.EXE	5a19b740945d425b1fd854cedbb5de92_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 2 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	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KeyGen.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
548	KeyGen.exe
548	KeyGen.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 696 wrote to memory of 548	696	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe	87
PID 696 wrote to memory of 548	696	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe	87
PID 696 wrote to memory of 548	696	5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5a19b740945d425b1fd854cedbb5de92_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:696
- C:\Windows\KeyGen.exe
  "C:\Windows\KeyGen.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:548

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:\Windows\KeyGen.exe

Filesize
52KB

MD5
e3c7d489013b51c671aa79c9068a2a00

SHA1
deed13e52afcc9fd2ef326fb6b0aa4bf7fcf14be

SHA256
5ea232ac5ebca4584f8689d5a1ed466404272a5c5496f41934537504368b5da2

SHA512
18a31ffcc796d6352142374dc0e12d83b9b46d56069a5db26a38b0f6a133302f13d7064bfe9bc16e7a705aeeb2cec2d654863d92280a6085c8202a3c8096b240

Download Submit
memory/548-15-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/548-18-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/696-0-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/696-17-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads