snakekeylogger | bf02f7e41f593c0f4bf6d5a8b97e0fefeb07763d62f35a9fe6705cca56bb895e

General

Target

dekont.pdf.exe
Size

699KB
MD5

48c9b0f3150fe9d1e2afd4da3dfa4874
SHA1

f08cc9e9c8f152cc376e48a0140f133e5a6315de
SHA256

bf02f7e41f593c0f4bf6d5a8b97e0fefeb07763d62f35a9fe6705cca56bb895e
SHA512

1869de08d6291d2ae60e47c6915b630e06e43d58bdf3796fb1eec2dd4cd288735e57607e403966251152ec79f8311b7e6113211326aa8b2afa0edd6f1a3b9381
SSDEEP

12288:rGYP2GC+sOL/GXh8L74mBfNUstzojBd0FycLUs3RhZFn5nErTNuywy5sLp3/MuJQ:rZCN+L74mBfNUstzooFyURhVnErJfJ+u

Score

10^/10

snakekeylogger collection keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
mail.stilltech.ro
Port:
587
Username:
[email protected]
Password:
eurobit555ro
Email To:
[email protected]

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/4536-143-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	dekont.pdf.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	dekont.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dekont.pdf.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
48	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5040 set thread context of 4536	5040	dekont.pdf.exe	96

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3124	powershell.exe
4536	dekont.pdf.exe
3124	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3124	powershell.exe
Token: SeDebugPrivilege	4536	dekont.pdf.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 3124	5040	dekont.pdf.exe	92
PID 5040 wrote to memory of 3124	5040	dekont.pdf.exe	92
PID 5040 wrote to memory of 3124	5040	dekont.pdf.exe	92
PID 5040 wrote to memory of 4652	5040	dekont.pdf.exe	94
PID 5040 wrote to memory of 4652	5040	dekont.pdf.exe	94
PID 5040 wrote to memory of 4652	5040	dekont.pdf.exe	94
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96
PID 5040 wrote to memory of 4536	5040	dekont.pdf.exe	96

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	dekont.pdf.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	dekont.pdf.exe

C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\dvrUOX.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3124
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dvrUOX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp33E1.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4652
- C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\dekont.pdf.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4536

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\dekont.pdf.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp33E1.tmp

Filesize
1KB

MD5
0bb0fd23a24548eee8adb8fc6c9fae93

SHA1
a9bc3c3f63361053feef65acc433f75431e3b1eb

SHA256
b5edad28cfafd1fd407742a9618ca251795e7b85caf5743dc6a3b09e5c8c2c20

SHA512
c00c6c5ff947f5739c0b128aaf81fefe4b8a9390e359573cbf2de3951e7ef58df24966910b31ea22ccbbdb037be129183152c1cd7497a5a8c1146d2172ca3a40

Download Submit
memory/3124-146-0x0000000005EE0000-0x0000000005F46000-memory.dmp

Filesize
408KB

Download
memory/3124-155-0x0000000007910000-0x000000000791A000-memory.dmp

Filesize
40KB

Download
memory/3124-147-0x0000000005740000-0x00000000057A6000-memory.dmp

Filesize
408KB

Download
memory/3124-148-0x00000000065A0000-0x00000000065BE000-memory.dmp

Filesize
120KB

Download
memory/3124-158-0x0000000007BE0000-0x0000000007BFA000-memory.dmp

Filesize
104KB

Download
memory/3124-139-0x0000000002C80000-0x0000000002CB6000-memory.dmp

Filesize
216KB

Download
memory/3124-157-0x0000000007AD0000-0x0000000007ADE000-memory.dmp

Filesize
56KB

Download
memory/3124-156-0x0000000007B20000-0x0000000007BB6000-memory.dmp

Filesize
600KB

Download
memory/3124-142-0x00000000057B0000-0x0000000005DD8000-memory.dmp

Filesize
6.2MB

Download
memory/3124-151-0x0000000070700000-0x000000007074C000-memory.dmp

Filesize
304KB

Download
memory/3124-154-0x0000000007890000-0x00000000078AA000-memory.dmp

Filesize
104KB

Download
memory/3124-145-0x00000000054D0000-0x00000000054F2000-memory.dmp

Filesize
136KB

Download
memory/3124-159-0x0000000007BC0000-0x0000000007BC8000-memory.dmp

Filesize
32KB

Download
memory/3124-153-0x0000000007F40000-0x00000000085BA000-memory.dmp

Filesize
6.5MB

Download
memory/3124-152-0x0000000006B40000-0x0000000006B5E000-memory.dmp

Filesize
120KB

Download
memory/3124-150-0x0000000006B60000-0x0000000006B92000-memory.dmp

Filesize
200KB

Download
memory/4536-149-0x00000000067C0000-0x0000000006982000-memory.dmp

Filesize
1.8MB

Download
memory/4536-143-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/5040-136-0x00000000089F0000-0x0000000008A8C000-memory.dmp

Filesize
624KB

Download
memory/5040-133-0x0000000005190000-0x0000000005734000-memory.dmp

Filesize
5.6MB

Download
memory/5040-135-0x0000000004E80000-0x0000000004E8A000-memory.dmp

Filesize
40KB

Download
memory/5040-134-0x0000000004CD0000-0x0000000004D62000-memory.dmp

Filesize
584KB

Download
memory/5040-132-0x0000000000280000-0x0000000000336000-memory.dmp

Filesize
728KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads