snakekeylogger | f53b0fa70af0d73053259d43ea39414707a6472b793d561220aee8b21ceb8436

General

Target

CHIKWA.exe
Size

35KB
MD5

add9b88583e5da86b52a7747ebdff087
SHA1

277ac2d7b74ba414126c187e22ee93bbde025060
SHA256

f53b0fa70af0d73053259d43ea39414707a6472b793d561220aee8b21ceb8436
SHA512

679d8f135473a1d926868528859542d69198e2d62365cb7e7d7b61ba9ba7a82cb2329da04e0308a8b0237f1d63e2674f6bd72b77ad13100f2ea8b5a5e4ec2bce

Score

10^/10

snakekeylogger keylogger persistence spyware stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

CHIKWA.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\CHIKWA.exe\""	CHIKWA.exe

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

Snake Keylogger Payload 6 IoCs

Processes:

resource	yara_rule
behavioral2/memory/504-10-0x00000000063D0000-0x0000000006463000-memory.dmp	family_snakekeylogger
behavioral2/memory/408-14-0x000000000046571E-mapping.dmp	family_snakekeylogger
behavioral2/memory/408-13-0x0000000000400000-0x000000000046A000-memory.dmp	family_snakekeylogger
behavioral2/memory/2968-17-0x000000000046571E-mapping.dmp	family_snakekeylogger
behavioral2/memory/3700-22-0x000000000046571E-mapping.dmp	family_snakekeylogger
behavioral2/memory/3244-28-0x000000000046571E-mapping.dmp	family_snakekeylogger

Drops startup file 2 IoCs

Processes:

CHIKWA.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CHIKWA.exe	CHIKWA.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CHIKWA.exe	CHIKWA.exe

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

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

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

CHIKWA.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\<Unknown> = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CHIKWA.exe"	CHIKWA.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\CHIKWA.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CHIKWA.exe"	CHIKWA.exe

Looks up external IP address via web service 6 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

11 checkip.dyndns.org
20 freegeoip.app
21 freegeoip.app
22 freegeoip.app
23 freegeoip.app
24 freegeoip.app

flow	ioc
11	checkip.dyndns.org
20	freegeoip.app
21	freegeoip.app
22	freegeoip.app
23	freegeoip.app
24	freegeoip.app

Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs

Processes:

CHIKWA.exe

pid	process
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe
504	CHIKWA.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

CHIKWA.exe

description	pid	process	target process
PID 504 set thread context of 3416	504	CHIKWA.exe	CHIKWA.exe
PID 504 set thread context of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 set thread context of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 set thread context of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 set thread context of 3244	504	CHIKWA.exe	CHIKWA.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2212 3416 WerFault.exe CHIKWA.exe

pid	pid_target	process	target process
2212	3416	WerFault.exe	CHIKWA.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

Processes:

CHIKWA.exeCHIKWA.exeCHIKWA.exeCHIKWA.exeCHIKWA.exe

pid	process
504	CHIKWA.exe
408	CHIKWA.exe
2968	CHIKWA.exe
3700	CHIKWA.exe
3244	CHIKWA.exe
3244	CHIKWA.exe
3244	CHIKWA.exe
3244	CHIKWA.exe
3244	CHIKWA.exe
3244	CHIKWA.exe
3244	CHIKWA.exe
408	CHIKWA.exe
408	CHIKWA.exe
408	CHIKWA.exe
2968	CHIKWA.exe
408	CHIKWA.exe
408	CHIKWA.exe
2968	CHIKWA.exe
408	CHIKWA.exe
2968	CHIKWA.exe
3700	CHIKWA.exe
2968	CHIKWA.exe
3700	CHIKWA.exe
2968	CHIKWA.exe
3244	CHIKWA.exe
408	CHIKWA.exe
2968	CHIKWA.exe
3700	CHIKWA.exe
3700	CHIKWA.exe
2968	CHIKWA.exe
3700	CHIKWA.exe
3700	CHIKWA.exe
3700	CHIKWA.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

CHIKWA.exeCHIKWA.exeCHIKWA.exeCHIKWA.exeCHIKWA.exe

description	pid	process
Token: SeDebugPrivilege	504	CHIKWA.exe
Token: SeDebugPrivilege	408	CHIKWA.exe
Token: SeDebugPrivilege	2968	CHIKWA.exe
Token: SeDebugPrivilege	3700	CHIKWA.exe
Token: SeDebugPrivilege	3244	CHIKWA.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

CHIKWA.exe

description	pid	process	target process
PID 504 wrote to memory of 3416	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3416	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3416	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3416	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 408	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 2968	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3700	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe
PID 504 wrote to memory of 3244	504	CHIKWA.exe	CHIKWA.exe

C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe
"C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:504

C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe
"C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe"
2⤵
PID:3416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3416 -s 88
3⤵
- Program crash
PID:2212

C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe
"C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:408

C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe
"C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2968

C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe
"C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3700

C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe
"C:\Users\Admin\AppData\Local\Temp\CHIKWA.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3244

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/408-14-0x000000000046571E-mapping.dmp

Download
memory/408-43-0x0000000005160000-0x0000000005161000-memory.dmp

Filesize
4KB

Download
memory/408-16-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/408-13-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/504-9-0x0000000004E80000-0x0000000004E81000-memory.dmp

Filesize
4KB

Download
memory/504-3-0x0000000000C00000-0x0000000000C01000-memory.dmp

Filesize
4KB

Download
memory/504-2-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/504-10-0x00000000063D0000-0x0000000006463000-memory.dmp

Filesize
588KB

Download
memory/504-8-0x0000000006330000-0x0000000006331000-memory.dmp

Filesize
4KB

Download
memory/504-7-0x0000000005650000-0x0000000005651000-memory.dmp

Filesize
4KB

Download
memory/504-6-0x0000000005970000-0x0000000005971000-memory.dmp

Filesize
4KB

Download
memory/504-21-0x0000000005620000-0x0000000005621000-memory.dmp

Filesize
4KB

Download
memory/504-5-0x00000000053D0000-0x00000000053D1000-memory.dmp

Filesize
4KB

Download
memory/2212-35-0x0000000004650000-0x0000000004651000-memory.dmp

Filesize
4KB

Download
memory/2968-17-0x000000000046571E-mapping.dmp

Download
memory/2968-18-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-44-0x00000000059D0000-0x00000000059D1000-memory.dmp

Filesize
4KB

Download
memory/3244-28-0x000000000046571E-mapping.dmp

Download
memory/3244-31-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/3244-46-0x0000000005380000-0x0000000005381000-memory.dmp

Filesize
4KB

Download
memory/3244-47-0x00000000064B0000-0x00000000064B1000-memory.dmp

Filesize
4KB

Download
memory/3416-12-0x000000000046571E-mapping.dmp

Download
memory/3700-22-0x000000000046571E-mapping.dmp

Download
memory/3700-24-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/3700-45-0x00000000055B0000-0x00000000055B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads