snakekeylogger | 872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99

General

Target

872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
Size

545KB
MD5

3cc7edfcd93bac94239fa43aafb1af52
SHA1

98bd9aa9c997705f70e6a3483b95390835e66157
SHA256

872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99
SHA512

f01fe46aa7e41b708b247c2e76e1de2a523ddc801b73edbdee88ad9efff0f7b5d1030b165aba59973fbaebb369203adc1290e28794dbcde40f9425784106f92a
SSDEEP

12288:NquErHF6xC9D6DmR1J98w4oknqOOCyQfZYQignEMlsFqqYJiWn1B:wrl6kD68JmlotQfZsgnEHPWn1B

Score

10^/10

snakekeylogger collection discovery keylogger stealer upx

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot1628099890:AAEoyPqXzUZV0NK78yRGbDMLJqRw0vcASbg/sendMessage?chat_id=1217600190

Signatures

Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 3 IoCs

resource	yara_rule
behavioral1/memory/2816-27-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2816-29-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2816-31-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\caulds.vbs	caulds.exe

Executes dropped EXE 1 IoCs

pid	Process
2304	caulds.exe

Loads dropped DLL 1 IoCs

pid	Process
1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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
4	checkip.dyndns.org

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/1760-13-0x0000000000B90000-0x0000000000CCE000-memory.dmp	autoit_exe
behavioral1/memory/2304-33-0x00000000013C0000-0x00000000014FE000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2304 set thread context of 2816	2304	caulds.exe	31

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1760-0-0x0000000000B90000-0x0000000000CCE000-memory.dmp	upx
behavioral1/files/0x0009000000016e09-9.dat	upx
behavioral1/memory/2304-16-0x00000000013C0000-0x00000000014FE000-memory.dmp	upx
behavioral1/memory/1760-13-0x0000000000B90000-0x0000000000CCE000-memory.dmp	upx
behavioral1/memory/2304-33-0x00000000013C0000-0x00000000014FE000-memory.dmp	upx

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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caulds.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2816	RegSvcs.exe
2816	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2304	caulds.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
2304	caulds.exe
2304	caulds.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
2304	caulds.exe
2304	caulds.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2304	1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe	30
PID 1760 wrote to memory of 2304	1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe	30
PID 1760 wrote to memory of 2304	1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe	30
PID 1760 wrote to memory of 2304	1760	872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe	30
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31
PID 2304 wrote to memory of 2816	2304	caulds.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe
"C:\Users\Admin\AppData\Local\Temp\872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Users\Admin\AppData\Local\poufs\caulds.exe
  "C:\Users\Admin\AppData\Local\Temp\872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99.exe"
    3⤵
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\poufs\caulds.exe

Filesize
545KB

MD5
3cc7edfcd93bac94239fa43aafb1af52

SHA1
98bd9aa9c997705f70e6a3483b95390835e66157

SHA256
872034d11ff4f9fa7af4212ef951e835a6a63cf3fbf59da60d22af84b3d94c99

SHA512
f01fe46aa7e41b708b247c2e76e1de2a523ddc801b73edbdee88ad9efff0f7b5d1030b165aba59973fbaebb369203adc1290e28794dbcde40f9425784106f92a

Download Submit
memory/1760-7-0x0000000000670000-0x0000000000A70000-memory.dmp

Filesize
4.0MB

Download
memory/1760-14-0x0000000002930000-0x0000000002A6E000-memory.dmp

Filesize
1.2MB

Download
memory/1760-13-0x0000000000B90000-0x0000000000CCE000-memory.dmp

Filesize
1.2MB

Download
memory/1760-0-0x0000000000B90000-0x0000000000CCE000-memory.dmp

Filesize
1.2MB

Download
memory/1760-36-0x0000000002930000-0x0000000002A6E000-memory.dmp

Filesize
1.2MB

Download
memory/2304-33-0x00000000013C0000-0x00000000014FE000-memory.dmp

Filesize
1.2MB

Download
memory/2304-16-0x00000000013C0000-0x00000000014FE000-memory.dmp

Filesize
1.2MB

Download
memory/2304-25-0x0000000000970000-0x0000000000D70000-memory.dmp

Filesize
4.0MB

Download
memory/2816-27-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2816-31-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2816-34-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/2816-35-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/2816-29-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2816-37-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/2816-38-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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