snakekeylogger | 235feecbf39c506144e406ee52d764d830e5124d113280a5e339bf3bdee978a5

Analysis

max time kernel
1s
max time network
133s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 14:17

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General

Target

LETTER OF AUTHORIZATION.exe
Size

3.0MB
MD5

57cb0d1fbbe7e57e906d9bec624ff50f
SHA1

d8eeb1c8e4530d619c7a5927fec5fcc892e0b24f
SHA256

235feecbf39c506144e406ee52d764d830e5124d113280a5e339bf3bdee978a5
SHA512

7d0be14e10f4174648cb597b9f8b32883088b9fed59cd4812339cdb379746e49b58dfb357d733fcb9b73c725451b64f6588e328518091b6311ef38c1dc41d886
SSDEEP

12288:RaoerDVWSJRvp61xGNoQOgR4FeGQ5fzF2M9PbxyWnnMRGIliKj:RinVl1Yeo0R4FeHX2qwRFj

Score

10^/10

snakekeylogger keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
valleycountysar.org
Port:
26
Username:
[email protected]
Password:
fY,FLoadtsiF

Signatures

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

Snake Keylogger payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1976-12-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1976-13-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1976-9-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1976-6-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1976-7-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

LETTER OF AUTHORIZATION.exe

description pid process target process

PID 2212 set thread context of 1976 2212 LETTER OF AUTHORIZATION.exe installutil.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

installutil.exe

pid process

1976 installutil.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

installutil.exe

description pid process

Token: SeDebugPrivilege 1976 installutil.exe

flow	ioc
4	checkip.dyndns.org

description	pid	process	target process
PID 2212 set thread context of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe

pid	process
1976	installutil.exe

description	pid	process
Token: SeDebugPrivilege	1976	installutil.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

LETTER OF AUTHORIZATION.exe

description	pid	process	target process
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 1976	2212	LETTER OF AUTHORIZATION.exe	installutil.exe
PID 2212 wrote to memory of 3008	2212	LETTER OF AUTHORIZATION.exe	WerFault.exe
PID 2212 wrote to memory of 3008	2212	LETTER OF AUTHORIZATION.exe	WerFault.exe
PID 2212 wrote to memory of 3008	2212	LETTER OF AUTHORIZATION.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\LETTER OF AUTHORIZATION.exe
"C:\Users\Admin\AppData\Local\Temp\LETTER OF AUTHORIZATION.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1976

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2212 -s 620
2⤵
PID:3008

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1976-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1976-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-18-0x0000000074CA0000-0x000000007538E000-memory.dmp

Filesize
6.9MB

Download
memory/1976-5-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-14-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

Filesize
4KB

Download
memory/1976-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-4-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-15-0x0000000074CA0000-0x000000007538E000-memory.dmp

Filesize
6.9MB

Download
memory/1976-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2212-1-0x0000000000820000-0x0000000000828000-memory.dmp

Filesize
32KB

Download
memory/2212-2-0x0000000000570000-0x00000000005EA000-memory.dmp

Filesize
488KB

Download
memory/2212-3-0x000007FEF5FC0000-0x000007FEF69AC000-memory.dmp

Filesize
9.9MB

Download
memory/2212-16-0x000007FEF5FC3000-0x000007FEF5FC4000-memory.dmp

Filesize
4KB

Download
memory/2212-17-0x000007FEF5FC0000-0x000007FEF69AC000-memory.dmp

Filesize
9.9MB

Download
memory/2212-0-0x000007FEF5FC3000-0x000007FEF5FC4000-memory.dmp

Filesize
4KB

Download