7845baea0ad22217e025fbe279cfba5ec9457407167b5106aaf6c46cab8dd5b1

General

Target

27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
Size

830KB
MD5

27553ffd7483441113a8846c1d412cfb
SHA1

80217e6c2519e79f159815afca3abc45157de162
SHA256

7845baea0ad22217e025fbe279cfba5ec9457407167b5106aaf6c46cab8dd5b1
SHA512

595987f3ea505eab071f0ab5515a3fe7d728efaa58b1992b8fc60c46de3d90327702bc52cf7329219efea2492d60b896d17c7e2a331684393d5bf1f5bba52528
SSDEEP

24576:ZxgrMRWjiOPEJYLUfZe/6z1QvbxNCjdmL3ctj:ZxqUAiULUf8/6z1EYjdmIt

Score

10^/10

evasion persistence trojan vmprotect

Malware Config

Signatures

UAC bypass 3 TTPs 4 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	WerFaultSec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WerFaultSec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2500	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1880	WerFaultSec.exe
2476	WerFaultSec.exe

Loads dropped DLL 1 IoCs

pid	Process
2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe

VMProtect packed file 2 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/memory/2000-0-0x0000000000810000-0x0000000000999000-memory.dmp	vmprotect
behavioral1/memory/2000-34-0x0000000000810000-0x0000000000999000-memory.dmp	vmprotect

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "-"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "-"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "-"	WerFaultSec.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WerFaultSec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\WerFaultSec.exe	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	WerFaultSec.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
1880	WerFaultSec.exe
2476	WerFaultSec.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	WerFaultSec.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9D3BAE1-C1C5-4740-92E6-2AB005C20F0F}\WpadNetworkName = "Network 3"	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-84-12-8a-13-61	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9D3BAE1-C1C5-4740-92E6-2AB005C20F0F}\42-84-12-8a-13-61	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-84-12-8a-13-61\WpadDecision = "0"	WerFaultSec.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ec000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	WerFaultSec.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9D3BAE1-C1C5-4740-92E6-2AB005C20F0F}\WpadDecisionTime = 3034a7205acfda01	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	WerFaultSec.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	WerFaultSec.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-84-12-8a-13-61\WpadDecisionTime = 3034a7205acfda01	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9D3BAE1-C1C5-4740-92E6-2AB005C20F0F}	WerFaultSec.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	WerFaultSec.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	WerFaultSec.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	WerFaultSec.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9D3BAE1-C1C5-4740-92E6-2AB005C20F0F}\WpadDecisionReason = "1"	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9D3BAE1-C1C5-4740-92E6-2AB005C20F0F}\WpadDecision = "0"	WerFaultSec.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-84-12-8a-13-61\WpadDecisionReason = "1"	WerFaultSec.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
1880	WerFaultSec.exe
2476	WerFaultSec.exe
2476	WerFaultSec.exe
2476	WerFaultSec.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 1880	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	28
PID 2000 wrote to memory of 1880	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	28
PID 2000 wrote to memory of 1880	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	28
PID 2000 wrote to memory of 1880	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	28
PID 2000 wrote to memory of 2500	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	30
PID 2000 wrote to memory of 2500	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	30
PID 2000 wrote to memory of 2500	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	30
PID 2000 wrote to memory of 2500	2000	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe	30

System policy modification 1 TTPs 4 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	WerFaultSec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WerFaultSec.exe

C:\Users\Admin\AppData\Local\Temp\27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\27553ffd7483441113a8846c1d412cfb_JaffaCakes118.exe"
1⤵
- UAC bypass
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2000
- C:\Windows\SysWOW64\WerFaultSec.exe
  C:\Windows\System32\WerFaultSec.exe -i
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1880
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\_uninsep.bat" "
  2⤵
  - Deletes itself
  PID:2500

C:\Windows\SysWOW64\WerFaultSec.exe
C:\Windows\SysWOW64\WerFaultSec.exe
1⤵
- UAC bypass
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- System policy modification
PID:2476

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

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
305B

MD5
add878125bb72c55c7dbb357394789fc

SHA1
eb23082a2b3dad2a68e670e8a41a3aae71de2847

SHA256
de77adeac71f6efbf52cbca4f83bda1fef0e9b5dc650d6bc32f5214030149538

SHA512
bef479d19784103a21352b4077c2f006acc926ae66b86959331a3d250dc7dbc4e6f48802518004c3e75d19c4bbf45299c3eec19ec066fc5cea09a4643de4da15

Download Submit
\Windows\SysWOW64\WerFaultSec.exe

Filesize
689KB

MD5
a90a0d930d55b075559ee03cd90e0ddf

SHA1
e394d77239fbc7aa54f365348968770609c2c1bf

SHA256
2e6d10dffcc5ab3019eab3a30dde526bb2b72dee5e9463d7f592d696b93e41b8

SHA512
5dab61992d9fb677a6ef76b1c5ce7d8f855a0490919305fe25d99bc3f1d56bb177893dd94dadee1a2ee1a2c456de08fdcab0827f20d76c0dfc30ecc2d29887d2

Download Submit
memory/1880-7-0x00000000775B0000-0x00000000775B1000-memory.dmp

Filesize
4KB

Download
memory/1880-9-0x00000000775B0000-0x00000000775B1000-memory.dmp

Filesize
4KB

Download
memory/1880-13-0x0000000075EE0000-0x0000000075EE1000-memory.dmp

Filesize
4KB

Download
memory/1880-25-0x00000000013D0000-0x0000000001517000-memory.dmp

Filesize
1.3MB

Download
memory/2000-0-0x0000000000810000-0x0000000000999000-memory.dmp

Filesize
1.5MB

Download
memory/2000-3-0x0000000000470000-0x00000000005B7000-memory.dmp

Filesize
1.3MB

Download
memory/2000-34-0x0000000000810000-0x0000000000999000-memory.dmp

Filesize
1.5MB

Download
memory/2476-16-0x00000000013D0000-0x0000000001517000-memory.dmp

Filesize
1.3MB

Download
memory/2476-36-0x00000000013D0000-0x0000000001517000-memory.dmp

Filesize
1.3MB

Download
memory/2476-37-0x0000000075EE0000-0x0000000075EE1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads