b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374

General

Target
jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
Size 24KB
Sample260925-2lr31saa83
SHA256 b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374
MD5 08b3fd8eae5dacded9c5e0877e7d8a38
SHA1 db25e62c1666655ad3217249dbab47bf0cff2b15
SHA512 45c93391ed8772e2005d426c6ef931b887ea79bee5c7911057f792713d48c2d4e2579cc8c2e8835e4ba75110ce073b6a60f2c0a52aad10beb29c42baa4ee28b5
SSDEEP 192:/MUJ6PYc7uhg+Xs7m8fCtGoh5L9/X8QsRjb/0L+I3O/6cc7kgUw90onn:/HJuBv+Xs7mwudxX8HjD0CI3OL5
TLSH
T1BEB29ECB6F9ABCF4E36281395185458306073030036FD58E3BA7897685A63A3693EA97
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-240542094-4193773837-3211495583-1000\Control Panel\International\Geo\Nation	myInsDll.exe

Executes dropped EXE 1 IoCs

pid	Process
3160	myInsDll.exe

Loads dropped DLL 2 IoCs

pid	Process
3160	myInsDll.exe
3160	myInsDll.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SfcDisable = "4294967197"	myInsDll.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\myInsDll.exe	jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
File created	C:\Windows\SysWOW64\sfc_my.dll	myInsDll.exe
File opened for modification	C:\Windows\SysWOW64\sfc_my.dll	myInsDll.exe
File created	C:\Windows\SysWOW64\Nmiam.nls	jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
File created	C:\Windows\SysWOW64\Tnaamsv.dll	jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
File created	C:\Windows\SysWOW64\myInsDll.exe	jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4952	3160	WerFault.exe	87

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_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	myInsDll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sfc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3160	myInsDll.exe
3160	myInsDll.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 3160	2172	jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe	87
PID 3160 wrote to memory of 4692	3160	myInsDll.exe	89

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\myInsDll.exe
  C:\Windows\system32\myInsDll.exe Tnaamsv.dll,dllDeleteFile C:\Users\Admin\AppData\Local\Temp\jaffacakes118_b881b65198c31b6e354b87aab9f205ae883877d5cd49c9769ab3d6ffce51d374.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies WinLogon
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3160
- - C:\Windows\SysWOW64\sfc.exe
    "C:\Windows\system32\sfc.exe" /REVERT
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4692
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3160 -s 1084
    3⤵
    - Program crash
    PID:4952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3160 -ip 3160
1⤵
PID:4100

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

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

Tnaamsv.dll

Path C:\Windows\SysWOW64\Tnaamsv.dll
Size 7KB
SHA256 682e8f1b00942f684a0f2d8ef1cd8a7958603b81a39420d35142feff9eb72591
MD5 f2de245378b45fef3f4e3a906c53b805
SHA1 12b65c59444de7f571a53221a51e539cd047c863
SHA512 5980a1a5940b32d5c207749d9148f27aa94b744af5beccddd396672731702e5bb987c69328da38f04ab7a2eaa694106288b05ddaa2ed63fc0cfce95ff2b5ccde
SSDEEP 192:s7m8fCtGoh5L9/X8QsRjb/0L+I3O/6cc7kgUw90A:s7mwudxX8HjD0CI3OL5A
TLSH
T1D9F18E88AEC7EDA4E172C03DD3486613190768300B6ED8007168DE3649D67D6B62FADB
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

myInsDll.exe

Path C:\Windows\SysWOW64\myInsDll.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

sfc_my.dll

Path C:\Windows\SysWOW64\sfc_my.dll
Size 48KB
SHA256 d9d8ce1b86b3978889466ab1b9f46778942d276922bf7533327a493083913087
MD5 98c499fccb739ab23b75c0d8b98e0481
SHA1 0ef5c464823550d5f53dd485e91dabc5d5a1ba0a
SHA512 9e64ac13e18ab0a518bb85b6612520645b5ab2c9a5359ced943813ba7344714999f25ba0e52240ad2d0c2fefc76552ff43173adc46334ff0b5dba171fb58e4e6
SSDEEP 768:iAHOev0jjN6n/6J0kQP6t/s8oDSwxgWK9I/WOMPbr6wD1Ped:iAuevh/6J5QP6Vum/9IubbPed
TLSH
T1EE237D91E6034171E7ED357021BCB27E2D3D5F05079144CBAB42D9AA99627C3BA3139F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3160-8-0x0000000010000000-0x0000000010107000-memory.dmp

Download

memory/3160-12-0x0000000010000000-0x0000000010107000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads