94ff66ba296f19d29031269469322eda85e6cae98fbc1263a1fa1e96d90c06be

General

Target

eced77776b5fe49de64b605569402825_JaffaCakes118.exe
Size

642KB
MD5

eced77776b5fe49de64b605569402825
SHA1

e9131169b2b77713e613bdf62fd3a7bdcd87db76
SHA256

94ff66ba296f19d29031269469322eda85e6cae98fbc1263a1fa1e96d90c06be
SHA512

87d0900e442b67d4129c0246baf0d8a1a8f1616686836d5b7930851232e269583b1d07e0d56e41004e34b4db1307a3264c4565bfab66b193e31dfaee903042d2
SSDEEP

12288:pjkArEN249AyE/rbaMct4bO2/VFJtLFaoa7zLvG1OiqwjG38XO60XXbk6:GFE//Tct4bOsTjLFa/73uEivjG3Q8o6

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\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
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	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	eced77776b5fe49de64b605569402825_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	csrcs.exe

Loads dropped DLL 4 IoCs

pid	Process
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3036-0-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/files/0x000b00000001225d-12.dat	upx
behavioral1/memory/3036-15-0x0000000005380000-0x000000000543D000-memory.dmp	upx
behavioral1/memory/2704-27-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/3036-36-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/2704-37-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/2704-54-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral1/memory/2704-77-0x0000000000400000-0x00000000004BD000-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"	eced77776b5fe49de64b605569402825_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	eced77776b5fe49de64b605569402825_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/3036-36-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe
behavioral1/memory/2704-37-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe
behavioral1/memory/2704-54-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe
behavioral1/memory/2704-77-0x0000000000400000-0x00000000004BD000-memory.dmp	autoit_exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\autorun.i	csrcs.exe
File created	C:\Windows\SysWOW64\csrcs.exe	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\csrcs.exe	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\autorun.in	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	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrcs.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe
3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2704	3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe	30
PID 3036 wrote to memory of 2704	3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe	30
PID 3036 wrote to memory of 2704	3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe	30
PID 3036 wrote to memory of 2704	3036	eced77776b5fe49de64b605569402825_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\eced77776b5fe49de64b605569402825_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eced77776b5fe49de64b605569402825_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:3036
- 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:2704

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\gxokpzs

Filesize
170KB

MD5
c6bfefd12aa70a92c2578b54843c8157

SHA1
3de64bffd284a90652c2f8e0f53d21fdd938f9dc

SHA256
3a5218c0f2f7b32756d1fb5a73432cbe3b66453b8e2ab385250652b3ea239458

SHA512
e353d015d7b32199d2d098428cc6566c2cf2df320ea0c11752eca230419f86a138abf6b091eb9127faadb0b1493a18c56f642259b415c76e1e6774e2dcb11615

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

Filesize
642KB

MD5
eced77776b5fe49de64b605569402825

SHA1
e9131169b2b77713e613bdf62fd3a7bdcd87db76

SHA256
94ff66ba296f19d29031269469322eda85e6cae98fbc1263a1fa1e96d90c06be

SHA512
87d0900e442b67d4129c0246baf0d8a1a8f1616686836d5b7930851232e269583b1d07e0d56e41004e34b4db1307a3264c4565bfab66b193e31dfaee903042d2

Download Submit
memory/2704-27-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2704-37-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2704-54-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2704-77-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3036-0-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3036-15-0x0000000005380000-0x000000000543D000-memory.dmp

Filesize
756KB

Download
memory/3036-25-0x0000000005380000-0x000000000543D000-memory.dmp

Filesize
756KB

Download
memory/3036-36-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads