snakekeylogger | 54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1f

General

Target

54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
Size

545KB
MD5

47310e2d76477f79641f8703027a60b0
SHA1

bba7157bfab11d11b6912cb0012e117de61d175a
SHA256

54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1f
SHA512

ccf55e9915002e828feec50c58ec1ccac378c0b1a1e081e5b2e542457ff4a2866aebaeeeb40bfe6188938b4e1dc0bc1c770e33a012752d28429f8b14ed7fb7f7
SSDEEP

12288:NquErHF6xC9D6DmR1J98w4oknqOOCyQfZYQignEMlsFqqYJiWn1:wrl6kD68JmlotQfZsgnEHPWn1

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/2828-27-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2828-31-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2828-29-0x0000000000400000-0x0000000000426000-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
2168	caulds.exe

Loads dropped DLL 1 IoCs

pid	Process
2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\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/2248-13-0x00000000012B0000-0x00000000013EE000-memory.dmp	autoit_exe
behavioral1/memory/2168-33-0x0000000000C40000-0x0000000000D7E000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2168 set thread context of 2828	2168	caulds.exe	32

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2248-0-0x00000000012B0000-0x00000000013EE000-memory.dmp	upx
behavioral1/files/0x0008000000018687-9.dat	upx
behavioral1/memory/2248-13-0x00000000012B0000-0x00000000013EE000-memory.dmp	upx
behavioral1/memory/2168-16-0x0000000000C40000-0x0000000000D7E000-memory.dmp	upx
behavioral1/memory/2168-33-0x0000000000C40000-0x0000000000D7E000-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	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caulds.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2828	RegSvcs.exe
2828	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2168	caulds.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
2168	caulds.exe
2168	caulds.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
2168	caulds.exe
2168	caulds.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2168	2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe	31
PID 2248 wrote to memory of 2168	2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe	31
PID 2248 wrote to memory of 2168	2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe	31
PID 2248 wrote to memory of 2168	2248	54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe	31
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32
PID 2168 wrote to memory of 2828	2168	caulds.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe
"C:\Users\Admin\AppData\Local\Temp\54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Users\Admin\AppData\Local\poufs\caulds.exe
  "C:\Users\Admin\AppData\Local\Temp\54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.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:2168
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1fN.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:2828

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

Replay Monitor

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Downloads

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

Filesize
545KB

MD5
47310e2d76477f79641f8703027a60b0

SHA1
bba7157bfab11d11b6912cb0012e117de61d175a

SHA256
54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1f

SHA512
ccf55e9915002e828feec50c58ec1ccac378c0b1a1e081e5b2e542457ff4a2866aebaeeeb40bfe6188938b4e1dc0bc1c770e33a012752d28429f8b14ed7fb7f7

Download Submit
memory/2168-33-0x0000000000C40000-0x0000000000D7E000-memory.dmp

Filesize
1.2MB

Download
memory/2168-16-0x0000000000C40000-0x0000000000D7E000-memory.dmp

Filesize
1.2MB

Download
memory/2168-25-0x0000000000F70000-0x0000000001370000-memory.dmp

Filesize
4.0MB

Download
memory/2248-7-0x0000000000BF0000-0x0000000000FF0000-memory.dmp

Filesize
4.0MB

Download
memory/2248-14-0x0000000002AC0000-0x0000000002BFE000-memory.dmp

Filesize
1.2MB

Download
memory/2248-13-0x00000000012B0000-0x00000000013EE000-memory.dmp

Filesize
1.2MB

Download
memory/2248-0-0x00000000012B0000-0x00000000013EE000-memory.dmp

Filesize
1.2MB

Download
memory/2248-36-0x0000000002AC0000-0x0000000002BFE000-memory.dmp

Filesize
1.2MB

Download
memory/2828-27-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2828-29-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2828-34-0x000000007404E000-0x000000007404F000-memory.dmp

Filesize
4KB

Download
memory/2828-35-0x0000000074040000-0x000000007472E000-memory.dmp

Filesize
6.9MB

Download
memory/2828-31-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2828-37-0x000000007404E000-0x000000007404F000-memory.dmp

Filesize
4KB

Download
memory/2828-38-0x0000000074040000-0x000000007472E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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