698cac7bc0d6445600eea6804bb603352827bc915114015f37b3f17fdb0f960f

General

Target

e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
Size

642KB
MD5

e1c9c8e8879073124237095a12f42748
SHA1

4ac49fb28674ad77ab07054264dfffd475344ff1
SHA256

698cac7bc0d6445600eea6804bb603352827bc915114015f37b3f17fdb0f960f
SHA512

e84e8cb2805c078ca38f7d7f3c4ccb047384fcd0ad8ce5ec95790dc158c03d022287e5344342e0cf506e79d56ef626e84dea6b4e48a86889f7991cb77f5ca8f6
SSDEEP

12288:hjkArEN249AyE/rbaMct4bO2/VFbSPon/+AqLBh+ciIT+1Qb5ECSTDJp:uFE//Tct4bOsT+Pu/l0YciIT7NECSvv

Score

10^/10

discovery evasion persistence trojan upx

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	csrcs.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	csrcs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	csrcs.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	csrcs.exe

Loads dropped DLL 4 IoCs

pid	Process
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2136-0-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/files/0x0008000000012117-12.dat	upx
behavioral1/memory/2136-16-0x0000000005400000-0x00000000054BD000-memory.dmp	upx
behavioral1/memory/2136-35-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/1988-36-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/1988-53-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/1988-74-0x0000000000400000-0x00000000004BD000-memory.dmp	upx

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\RunServices\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	csrcs.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	csrcs.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
11	checkip.dyndns.org

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2136-35-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe
behavioral1/memory/1988-36-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe
behavioral1/memory/1988-53-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe
behavioral1/memory/1988-74-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\csrcs.exe	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\csrcs.exe	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\autorun.in	csrcs.exe
File opened for modification	C:\Windows\SysWOW64\autorun.i	csrcs.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	csrcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 1988	2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe	28
PID 2136 wrote to memory of 1988	2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe	28
PID 2136 wrote to memory of 1988	2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe	28
PID 2136 wrote to memory of 1988	2136	e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e1c9c8e8879073124237095a12f42748_JaffaCakes118.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Adds policy Run key to start application
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\csrcs.exe
  "C:\Windows\SysWOW64\csrcs.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Adds policy Run key to start application
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:1988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

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:\Users\Admin\AppData\Local\Temp\sgxkzem

Filesize
161KB

MD5
1cb688e4b66d2c8306499137fcce35b4

SHA1
b9caaa8c30b2c08adc1c23aaad40e7db39f88a78

SHA256
dfa37366ff0c32f4ef194c30e79dcfedc2fb3c0488488e2b0ac531fb7abd3529

SHA512
b01e03d5f75ea9552576ffee4166c83dc455745ea400428e3d35d05fccf1f0244923c043056e1019843c16c2e80860c13315989ef037f09ccd4f2220d5c14d28

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

Filesize
642KB

MD5
e1c9c8e8879073124237095a12f42748

SHA1
4ac49fb28674ad77ab07054264dfffd475344ff1

SHA256
698cac7bc0d6445600eea6804bb603352827bc915114015f37b3f17fdb0f960f

SHA512
e84e8cb2805c078ca38f7d7f3c4ccb047384fcd0ad8ce5ec95790dc158c03d022287e5344342e0cf506e79d56ef626e84dea6b4e48a86889f7991cb77f5ca8f6

Download Submit
memory/1988-36-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1988-53-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1988-74-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2136-0-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2136-16-0x0000000005400000-0x00000000054BD000-memory.dmp

Filesize
756KB

Download
memory/2136-25-0x0000000005400000-0x00000000054BD000-memory.dmp

Filesize
756KB

Download
memory/2136-35-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads