snakekeylogger | c69743fdc823a97e577cdc0b1047fe3831effc6ad48cbbad5a5af8b8dc6854c3

Analysis

max time kernel
139s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2023, 12:20

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General

Target
d405434579.exe
Size 411KB
Sample230119-phr8dscg9y
SHA256 c69743fdc823a97e577cdc0b1047fe3831effc6ad48cbbad5a5af8b8dc6854c3
MD5 9c2fe785b24706d8751e5c72c9041d04
SHA1 9a474d15293421cedebe5518b5ec84550a7fe03a
SHA512 abe2d7a553767a3b08b29089247d9515e0032981945d2214bfdff005daf07da443c0267c83d03f6d11741d1569136261ba9a36b65ca860ffdf356b6b223f6206
SSDEEP 6144:GYa6PYUqptFgc7gMXS0lF+clECeBe2V4xJc13hF4:GYRYUItFgQS0+clEPVsc13hu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/3748-139-0x0000000000400000-0x0000000000437000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

pid	Process
4688	sylvs.exe
3748	sylvs.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	sylvs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	sylvs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	sylvs.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
10	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4688 set thread context of 3748	4688	sylvs.exe	84

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3748	sylvs.exe
3748	sylvs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4688	sylvs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3748	sylvs.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 4688	4904	d405434579.exe	83
PID 4904 wrote to memory of 4688	4904	d405434579.exe	83
PID 4904 wrote to memory of 4688	4904	d405434579.exe	83
PID 4688 wrote to memory of 3748	4688	sylvs.exe	84
PID 4688 wrote to memory of 3748	4688	sylvs.exe	84
PID 4688 wrote to memory of 3748	4688	sylvs.exe	84
PID 4688 wrote to memory of 3748	4688	sylvs.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	sylvs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	sylvs.exe

C:\Users\Admin\AppData\Local\Temp\d405434579.exe
"C:\Users\Admin\AppData\Local\Temp\d405434579.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4904
- C:\Users\Admin\AppData\Local\Temp\sylvs.exe
  "C:\Users\Admin\AppData\Local\Temp\sylvs.exe" C:\Users\Admin\AppData\Local\Temp\ccimy.gr
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Users\Admin\AppData\Local\Temp\sylvs.exe
    "C:\Users\Admin\AppData\Local\Temp\sylvs.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:3748

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

ccimy.gr

Path C:\Users\Admin\AppData\Local\Temp\ccimy.gr
Size 5KB
SHA256 880d7837fac0aefdeeac6283c17110b2f464f455910df22eb1e38c0fc6a3539d
MD5 2e287cb8bd11b39a66a4f642f3d3fb85
SHA1 41f552896a718d8ca7edb1ce32bff39cda563898
SHA512 29e9b2cfbf81e65a78646c679274590e9223b697b9c98c51d86a075d0d953d219447daa825064c67a5685b9bd8932b8da11cc6c73621168f30a26fc6f607688a
SSDEEP 96:tarcwtVF0FT3+aaSGaBmItV1QTUQKG/FPzO3xVeqbn4FiAGNZF7zmzuZPIed:tarcwtnUOaa/Lq3QKG/Fa3xVeqbn4Fmd
MD5 SHA1 SHA512 SSDEEP

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sylvs.exe

Path C:\Users\Admin\AppData\Local\Temp\sylvs.exe
Size 53KB
SHA256 cf96da66197003cda51c595b3a202694c8832824b3e7fcc154700d2a8549a3df
MD5 6a13711466d644ead320310b21bdec6c
SHA1 e5ad80a35dc3c06432f480f2be85a930ee2375de
SHA512 c6244a28cd810c849e53f83eeada3ff1161d33994d82fe4a8f765e086c32dfb7e1d0bbab6db6e3e1dab12bb901a7fde732ed7385cd6eba743050ef2fd706a220
SSDEEP 768:QaROViBz49ciDWLqybzGJDzKr1LIlqIQAHa96to+6NO8Ji5:jOezjLqynGD6oqgHalF05
MD5 SHA1 SHA512 SSDEEP

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sylvs.exe

Path C:\Users\Admin\AppData\Local\Temp\sylvs.exe
Size 53KB
SHA256 cf96da66197003cda51c595b3a202694c8832824b3e7fcc154700d2a8549a3df
MD5 6a13711466d644ead320310b21bdec6c
SHA1 e5ad80a35dc3c06432f480f2be85a930ee2375de
SHA512 c6244a28cd810c849e53f83eeada3ff1161d33994d82fe4a8f765e086c32dfb7e1d0bbab6db6e3e1dab12bb901a7fde732ed7385cd6eba743050ef2fd706a220
SSDEEP 768:QaROViBz49ciDWLqybzGJDzKr1LIlqIQAHa96to+6NO8Ji5:jOezjLqynGD6oqgHalF05
MD5 SHA1 SHA512 SSDEEP

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sylvs.exe

Path C:\Users\Admin\AppData\Local\Temp\sylvs.exe
Size 53KB
SHA256 cf96da66197003cda51c595b3a202694c8832824b3e7fcc154700d2a8549a3df
MD5 6a13711466d644ead320310b21bdec6c
SHA1 e5ad80a35dc3c06432f480f2be85a930ee2375de
SHA512 c6244a28cd810c849e53f83eeada3ff1161d33994d82fe4a8f765e086c32dfb7e1d0bbab6db6e3e1dab12bb901a7fde732ed7385cd6eba743050ef2fd706a220
SSDEEP 768:QaROViBz49ciDWLqybzGJDzKr1LIlqIQAHa96to+6NO8Ji5:jOezjLqynGD6oqgHalF05
MD5 SHA1 SHA512 SSDEEP

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ugfraj.a

Path C:\Users\Admin\AppData\Local\Temp\ugfraj.a
Size 223KB
SHA256 563659982c2dfeb1017becc3275b6f3629c70f58330716c4fcb4f434005edb83
MD5 8bf5cb46863fd8025decbce1bb104c38
SHA1 7a9a9477ed94750ab0b3eb12e0cf3b572922e5dd
SHA512 162f5a9b514c161f5581add472226c3dbe8285ef510bfd289eceda65b352e3297817d65d544f3445adbd726ebaa85779b0c3f13f02a75225f983770ca2d6e446
SSDEEP 6144:XUjEBtGQyh38CSUgAsKhNGopN0dVZRI6F281oM:XUgMh1fcopG3ZRI6cKt
MD5 SHA1 SHA512 SSDEEP

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memory/3748-139-0x0000000000400000-0x0000000000437000-memory.dmp

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memory/3748-140-0x0000000004A50000-0x0000000004FF4000-memory.dmp

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memory/3748-141-0x0000000004980000-0x0000000004A1C000-memory.dmp

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memory/3748-142-0x0000000005B60000-0x0000000005D22000-memory.dmp

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memory/3748-143-0x0000000005D30000-0x0000000005DC2000-memory.dmp

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memory/3748-144-0x0000000005E20000-0x0000000005E2A000-memory.dmp

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