c855db6aca7dbb210431969bdb2058f618ae16c5ca49dd7bc08f7036c9a31695

General

Target
jaffacakes118__2a3cdd260fd7e58c61adeb3f04a65b48.exe
Size 401KB
Sample260920-3blc6afp4s
SHA256 c855db6aca7dbb210431969bdb2058f618ae16c5ca49dd7bc08f7036c9a31695
MD5 2a3cdd260fd7e58c61adeb3f04a65b48
SHA1 56749c1a68623c126bba7475962ae6f54fc43e27
SHA512 c0953291bf878e71b86f6f9657d7a8a535e93f3c35080b3949ef26f12056ed2b4c57301f855db8b3e83ba4c8a5008323cb95385149b4566875e5a42fed6608f4
SSDEEP 6144:tG5zDF53J5Vj6zt2TgJ1yuDgIwJpLaVXTdPCN4XaxjYl:tWrpIYz8VXT5CN4K6l
TLSH
T17A94F1537DA15EAEE8924C7EC3A3813312369C360B7B4C4643D877A358BB1536A23D5B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
840	yyzvjtoz.exe

Loads dropped DLL 1 IoCs

pid	Process
840	yyzvjtoz.exe

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

System Information Discovery
T1082

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
5224	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2040	3860	WerFault.exe	88
4636	840	WerFault.exe	98

System Location Discovery: System Language Discovery 1 TTPs 5 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	yyzvjtoz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118__2a3cdd260fd7e58c61adeb3f04a65b48.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5224	cmd.exe
3792	PING.EXE

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
1904	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3792	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	taskkill.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 5224	3860	jaffacakes118__2a3cdd260fd7e58c61adeb3f04a65b48.exe	93
PID 5224 wrote to memory of 1904	5224	cmd.exe	95
PID 5224 wrote to memory of 3792	5224	cmd.exe	97
PID 5224 wrote to memory of 840	5224	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\jaffacakes118__2a3cdd260fd7e58c61adeb3f04a65b48.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118__2a3cdd260fd7e58c61adeb3f04a65b48.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 592
  2⤵
  - Program crash
  PID:2040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 3860 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\jaffacakes118__2a3cdd260fd7e58c61adeb3f04a65b48.exe" & start C:\Users\Admin\AppData\Local\yyzvjtoz.exe -f
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5224
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 3860
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1904
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3792
- - C:\Users\Admin\AppData\Local\yyzvjtoz.exe
    C:\Users\Admin\AppData\Local\yyzvjtoz.exe -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:840
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 604
      4⤵
      Program crash
      PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3860 -ip 3860
1⤵
PID:5604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 392 -p 840 -ip 840
1⤵
PID:5072

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

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

yyzvjtoz.exe

Path C:\Users\Admin\AppData\Local\yyzvjtoz.exe
Size 401KB
SHA256 c855db6aca7dbb210431969bdb2058f618ae16c5ca49dd7bc08f7036c9a31695
MD5 2a3cdd260fd7e58c61adeb3f04a65b48
SHA1 56749c1a68623c126bba7475962ae6f54fc43e27
SHA512 c0953291bf878e71b86f6f9657d7a8a535e93f3c35080b3949ef26f12056ed2b4c57301f855db8b3e83ba4c8a5008323cb95385149b4566875e5a42fed6608f4
SSDEEP 6144:tG5zDF53J5Vj6zt2TgJ1yuDgIwJpLaVXTdPCN4XaxjYl:tWrpIYz8VXT5CN4K6l
TLSH
T17A94F1537DA15EAEE8924C7EC3A3813312369C360B7B4C4643D877A358BB1536A23D5B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/840-6-0x00000000005A0000-0x00000000005A2000-memory.dmp

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memory/840-8-0x0000000001000000-0x00000000010B6000-memory.dmp

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memory/840-9-0x00000000005A0000-0x00000000005A2000-memory.dmp

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memory/3860-0-0x0000000000660000-0x0000000000662000-memory.dmp

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memory/3860-1-0x0000000000550000-0x0000000000552000-memory.dmp

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memory/3860-3-0x0000000001000000-0x00000000010B6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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