snakekeylogger | b4fab30e3e48d0b9f565b1ba0aeb34a9c340bc67e71b34cc24a96224ad2577e2

General

Target

a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
Size

414KB
MD5

7df48a735cf653a7cdfafdacfa18e9fe
SHA1

8392410562ae6bb1d8792f7e82cc78d334136c10
SHA256

a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7
SHA512

a3721db0f5abfed191975bac48d7d10f0ee34304e2384080fdb501b7ff45bbb9f58d805103c1fb340ae28e799befd49f4723548a1ca83cbbcc66d21518ee11c3
SSDEEP

6144:Hg0GgLaOwh3biYqc0kpScxhBryo0aVJchfoWUC8Qr+1vFZnyBTgwLr4h6/qA2ur:A0GgLCh3b/msfurawWq8Ntu/J

Score

10^/10

snakekeylogger defense_evasion discovery keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot5231087432:AAGpDNiylOvJ21KejYNZPyeLSQa-u4GJlU4/sendMessage?chat_id=1474445387

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/3124-24-0x0000000000500000-0x0000000000526000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe

Executes dropped EXE 1 IoCs

pid	Process
3124	InstallUtil.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
33	checkip.dyndns.org
35	freegeoip.app
36	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4392 set thread context of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1124	3124	WerFault.exe	98

System Location Discovery: System Language Discovery 1 TTPs 2 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	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
3124	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
Token: SeDebugPrivilege	3124	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98
PID 4392 wrote to memory of 3124	4392	a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe	98

C:\Users\Admin\AppData\Local\Temp\a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe
"C:\Users\Admin\AppData\Local\Temp\a52d9b136a8a439dab2da1d870ab2a75d2847817191bc785e3894c95b9c9eff7.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3124
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3124 -s 1776
    3⤵
    - Program crash
    PID:1124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3124 -ip 3124
1⤵
PID:1964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

InstallUtil

1

T1218.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/3124-26-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3124-25-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3124-24-0x0000000000500000-0x0000000000526000-memory.dmp

Filesize
152KB

Download
memory/3124-23-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-11-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/4392-15-0x000000000A500000-0x000000000A854000-memory.dmp

Filesize
3.3MB

Download
memory/4392-7-0x000000000A130000-0x000000000A1C2000-memory.dmp

Filesize
584KB

Download
memory/4392-8-0x00000000054C0000-0x00000000054CA000-memory.dmp

Filesize
40KB

Download
memory/4392-9-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-0-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/4392-12-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-13-0x0000000005400000-0x000000000541A000-memory.dmp

Filesize
104KB

Download
memory/4392-14-0x0000000005420000-0x0000000005426000-memory.dmp

Filesize
24KB

Download
memory/4392-6-0x0000000005490000-0x00000000054A6000-memory.dmp

Filesize
88KB

Download
memory/4392-16-0x0000000006CD0000-0x0000000006CF2000-memory.dmp

Filesize
136KB

Download
memory/4392-5-0x00000000053B0000-0x00000000053E2000-memory.dmp

Filesize
200KB

Download
memory/4392-4-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-3-0x00000000054D0000-0x0000000005A74000-memory.dmp

Filesize
5.6MB

Download
memory/4392-22-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-2-0x0000000004E80000-0x0000000004F1C000-memory.dmp

Filesize
624KB

Download
memory/4392-1-0x0000000000440000-0x00000000004AE000-memory.dmp

Filesize
440KB

Download

Analysis

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