4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510

General

Target
jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Size 20KB
Sample260924-er56hadg39
SHA256 4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510
MD5 646b682dde931e9d079e4fc9bafa6d51
SHA1 f98739ace4d4652c817837068c3a4e123e30612a
SHA512 590d1681bb9a3239821cdb911ec134dd6c2b46bd7688f719f38cf9399d63cf2b3f569694134049f2f65da9739b79fdde84a14f8bb0891f4568284ba66d47bc88
SSDEEP 384:TRFetbovP8mWwdPUJq9RqKX9oSuRxJJc8L9IxF34aMGCdPqW+KA:XOboHOsUJq9wKX9yRNciIxF34AGJ
TLSH
T168922C71BBD504E2E3A507F12AB0060A0BAEEC244F2794BEC26F928955E4562F539343
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 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\ShellServiceObjectDelayLoad\msnmsg = "{DA191DE0-AA86-4ED0-4B87-293D48B2AE99}"	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe

Loads dropped DLL 3 IoCs

pid	Process
3132	rundll32.exe
3132	rundll32.exe
3132	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\unxxx.bat	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Messenger\msgmr.dll	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\Framdee.ttf	rundll32.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1524	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DA191DE0-AA86-4ED0-4B87-293D48B2AE99}	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DA191DE0-AA86-4ED0-4B87-293D48B2AE99}\InprocServer32\ = "C:\\Program Files\\Messenger\\msgmr.dll"	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DA191DE0-AA86-4ED0-4B87-293D48B2AE99}\InprocServer32\ThreadingModel = "Apartment"	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DA191DE0-AA86-4ED0-4B87-293D48B2AE99}\InprocServer32	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 3132	1572	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe	90
PID 1572 wrote to memory of 1524	1572	jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe	91

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4f5c8c79f17f58e42b592d066960842e8c521e1c7d8791a8edc094e00d429510.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 "C:\Program Files\Messenger\msgmr.dll",UIMessage
  2⤵
  - Loads dropped DLL
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:3132
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c "C:\Windows\system32\unxxx.bat"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1524

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msgmr.dll

Path C:\Program Files\Messenger\msgmr.dll
Size 15KB
SHA256 31abcdc525c04ab81f5fcbd8c757cf7c8598aad173fb1f2044392005ef418db4
MD5 d90c8259d58d14b8c86b2d4e947e4021
SHA1 32163b333b6c6f52a7e9e5b05b3658db9c14dd18
SHA512 b8fe2c938d5a6302b1c32ea478a0d230043c62419adf82d8b552c0fd4dbf48fc4b44de73dbf77e056c04939019275d2a5289416aeadfc6d8888e7bece6932656
SSDEEP 384:nWcPNnDUJq9RqKX9oSuRxJJc8L9IxF34aMGCdPqW+KA:nWSnDUJq9wKX9yRNciIxF34AGJ
TLSH
T131621B357BE501F3E3A206B629B00A1B177EFC108F37942AD25F91842AE5512F539343
MD5 SHA1 SHA512 SSDEEP TLSH

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Framdee.ttf

Path C:\Windows\Fonts\Framdee.ttf
Size 9KB
SHA256 68c4554c5afa35ce17c2eca235c52b3fbb4fc82b06a0fcbc6624caa9b35c0c1b
MD5 fc71488a9fff5dc1c70de21345bf2918
SHA1 5b0af359c690524d05a93b05285b8867cb6a289b
SHA512 de72f7a5bae6fd3ee4a334982f8e775291f2aad915a6f471cf0fb12d4ac592197dd3ad25f270b81ed44904a9ff0c997515a1210cd8c2624ba56fe02640af4a25
SSDEEP 192:SXqKNdDa8t9Z1AS/A+MRxJJc8qmAQqkIxF34aZaGCdKIK:6qKX9oSuRxJJc8L9IxF34aMGCdP
TLSH
T177123932BAE609F3C28912F126B04E1F2FAEDC1497714472C763D6A42AD5222F53F243
MD5 SHA1 SHA512 SSDEEP TLSH

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unxxx.bat

Path C:\Windows\SysWOW64\unxxx.bat
Size 304B
SHA256 71acbc309bdb3b21fc0566e89ce9ff9b7917920c0a72a3ed453e9f1498663289
MD5 8003b16e61150c54ad8be29d6200c71f
SHA1 292d0225648cf80c7d1fbf23b7c70eaaef99d448
SHA512 ee6d75ad714d7b936bc07011e270f67e64b9c12830a14c9a63e5e4c45b436baa4e0b43a692f57d071fd90090926cd9a7513f271b014526a11db73ea7d82cbf27
TLSH
T11CE0CD165AD5214506218D7B47B6C32E513059143ECD6A081729C5AAF0E24FEBF55164
MD5 SHA1 SHA512 TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads