18b5f37480656278fca239bd1dfd122197a7f80fc8e083107d8a9550dfd29974

General

Target
jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Size 111KB
Sample260920-3gd62aea23
SHA256 18b5f37480656278fca239bd1dfd122197a7f80fc8e083107d8a9550dfd29974
MD5 2a7992477e4a873945b8ba1830defa00
SHA1 e6559830d82a07012df783c5fbb08e15e5b8fa06
SHA512 15f7d15190d4893c2608ea098ea1f2cab189206cad407e81b174e543cccba400ea0d5ec31a386c1f0fd2a77e81ee34356f2282ab8a973fad93af5aa27f3e49ac
SSDEEP 3072:XR5qdFrDyDTadOIQ/GmnTG9GaGhe3UQGu:B54FrODTapKfTG90U3VGu
TLSH
T1ECB3014CBBEBF11FD4A9147808D386B0E921AF164D46877E3A28FF6FA971778D410126
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

defense_evasion discovery persistence

Malware Config

Signatures

Disables RegEdit via registry modification 2 IoCs

defense_evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msmsgr.exe

Disables Task Manager via registry modification
defense_evasion

Executes dropped EXE 2 IoCs

pid	Process
3116	msmsgr.exe
888	msmsgr.exe

Adds Run key to start application 2 TTPs 8 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\MSN Messenger User Controls = "msmsgr.exe"	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\MSN Messenger User Controls = "msmsgr.exe"	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSN Messenger User Controls = "msmsgr.exe"	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\RunServices\MSN Messenger User Controls = "msmsgr.exe"	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSN Messenger User Controls = "msmsgr.exe"	msmsgr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\MSN Messenger User Controls = "msmsgr.exe"	msmsgr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSN Messenger User Controls = "msmsgr.exe"	msmsgr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\RunServices\MSN Messenger User Controls = "msmsgr.exe"	msmsgr.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msmsgr.exe	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
File opened for modification	C:\Windows\SysWOW64\msmsgr.exe	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
File created	C:\Windows\SysWOW64\msmsgr.exe	msmsgr.exe
File opened for modification	C:\Windows\SysWOW64\msmsgr.exe	attrib.exe
File opened for modification	C:\Windows\SysWOW64\msmsgr.exe	attrib.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msmsgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msmsgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Runs net.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1936	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
3116	msmsgr.exe
888	msmsgr.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 1508	1936	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe	89
PID 1936 wrote to memory of 5496	1936	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe	91
PID 1936 wrote to memory of 3116	1936	jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe	93
PID 3116 wrote to memory of 3264	3116	msmsgr.exe	94
PID 3116 wrote to memory of 3380	3116	msmsgr.exe	95
PID 3116 wrote to memory of 888	3116	msmsgr.exe	96
PID 1508 wrote to memory of 4772	1508	net.exe	98
PID 3264 wrote to memory of 1232	3264	net.exe	100

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
5496	attrib.exe
3380	attrib.exe

C:\Users\Admin\AppData\Local\Temp\jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118__2a7992477e4a873945b8ba1830defa00.exe"
1⤵
- Disables RegEdit via registry modification
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\SysWOW64\net.exe
  net stop "Windows Firewall/Internet Connection Sharing (ICS)"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1508
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4772
- C:\Windows\SysWOW64\attrib.exe
  attrib +H +S C:\Windows\system32\msmsgr.exe
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:5496
- C:\Windows\SysWOW64\msmsgr.exe
  C:\Windows\system32\msmsgr.exe
  2⤵
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\net.exe
    net stop "Windows Firewall/Internet Connection Sharing (ICS)"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3264
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1232
- - C:\Windows\SysWOW64\attrib.exe
    attrib +H +S C:\Windows\system32\msmsgr.exe
    3⤵
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3380
- - C:\Windows\SysWOW64\msmsgr.exe
    C:\Windows\system32\msmsgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:888

Network

MITRE ATT&CK Enterprise v16

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

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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msmsgr.exe

Path C:\Windows\SysWOW64\msmsgr.exe
Size 111KB
SHA256 18b5f37480656278fca239bd1dfd122197a7f80fc8e083107d8a9550dfd29974
MD5 2a7992477e4a873945b8ba1830defa00
SHA1 e6559830d82a07012df783c5fbb08e15e5b8fa06
SHA512 15f7d15190d4893c2608ea098ea1f2cab189206cad407e81b174e543cccba400ea0d5ec31a386c1f0fd2a77e81ee34356f2282ab8a973fad93af5aa27f3e49ac
SSDEEP 3072:XR5qdFrDyDTadOIQ/GmnTG9GaGhe3UQGu:B54FrODTapKfTG90U3VGu
TLSH
T1ECB3014CBBEBF11FD4A9147808D386B0E921AF164D46877E3A28FF6FA971778D410126
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/888-17-0x00000000006E0000-0x00000000006E1000-memory.dmp

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memory/888-21-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/1936-0-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/1936-2-0x00000000021C0000-0x00000000021C1000-memory.dmp

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memory/1936-1-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/1936-22-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/3116-13-0x00000000006E0000-0x00000000006F0000-memory.dmp

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memory/3116-11-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/3116-20-0x0000000000400000-0x0000000000444000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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