snakekeylogger | fdbb2ac6c641eeae342ba7a8e32d8cd40ec6749aa3d49f89cc6fbf934ebf3f41

Analysis

max time kernel
70s
max time network
144s
platform
windows7_x64
resource
win7v20201028
submitted
26-01-2021 13:11

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General

Target

IMG_761213.doc.rtf
Size

1011KB
MD5

a9b798f391bf12851f885eb0a696b1fc
SHA1

d67ca4b35f77ded21e5e5f101bc69a694904d4b8
SHA256

fdbb2ac6c641eeae342ba7a8e32d8cd40ec6749aa3d49f89cc6fbf934ebf3f41
SHA512

200a0ea3ff4c012a6c1bac387afd71a5561009d97fdc77b2e733c37b0001e630255e05672b67861c8d2e873daf6aeb69c328c675457301943101b1f40442d2ef

Score

10^/10

snakekeylogger keylogger persistence ransomware spyware stealer

Malware Config

Signatures

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

Snake Keylogger Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1684-38-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/1684-39-0x0000000000463A9E-mapping.dmp	family_snakekeylogger
behavioral1/memory/1684-42-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1700 EQNEDT32.EXE
8 1700 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

69577.exeron.exeInstallUtil.exe

pid process

548 69577.exe
1620 ron.exe
1684 InstallUtil.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE69577.exeron.exe

pid process

1700 EQNEDT32.EXE
548 69577.exe
1620 ron.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

flow	pid	process
6	1700	EQNEDT32.EXE
8	1700	EQNEDT32.EXE

pid	process
1700	EQNEDT32.EXE
548	69577.exe
1620	ron.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\bnye = "C:\\Users\\Admin\\ron.exe"	reg.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.

Processes:

flow ioc

12 checkip.dyndns.org
15 freegeoip.app
16 freegeoip.app
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082
Suspicious use of SetThreadContext 1 IoCs

Processes:

ron.exe

description pid process target process

PID 1620 set thread context of 1684 1620 ron.exe InstallUtil.exe
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1700 EQNEDT32.EXE

flow	ioc
12	checkip.dyndns.org
15	freegeoip.app
16	freegeoip.app

description	pid	process	target process
PID 1620 set thread context of 1684	1620	ron.exe	InstallUtil.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

pid	process
1700	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1636 WINWORD.EXE

pid	process
1636	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

69577.exeron.exeInstallUtil.exe

pid	process
548	69577.exe
548	69577.exe
548	69577.exe
548	69577.exe
548	69577.exe
1620	ron.exe
1620	ron.exe
1684	InstallUtil.exe
1684	InstallUtil.exe
1684	InstallUtil.exe
1684	InstallUtil.exe
1684	InstallUtil.exe
1684	InstallUtil.exe
1684	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exeron.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 548 69577.exe
Token: SeDebugPrivilege 1620 ron.exe
Token: SeDebugPrivilege 1684 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1636 WINWORD.EXE
1636 WINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	548	69577.exe
Token: SeDebugPrivilege	1620	ron.exe
Token: SeDebugPrivilege	1684	InstallUtil.exe

pid	process
1636	WINWORD.EXE
1636	WINWORD.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.execmd.exeron.exe

description	pid	process	target process
PID 1636 wrote to memory of 1968	1636	WINWORD.EXE	splwow64.exe
PID 1636 wrote to memory of 1968	1636	WINWORD.EXE	splwow64.exe
PID 1636 wrote to memory of 1968	1636	WINWORD.EXE	splwow64.exe
PID 1636 wrote to memory of 1968	1636	WINWORD.EXE	splwow64.exe
PID 1700 wrote to memory of 548	1700	EQNEDT32.EXE	69577.exe
PID 1700 wrote to memory of 548	1700	EQNEDT32.EXE	69577.exe
PID 1700 wrote to memory of 548	1700	EQNEDT32.EXE	69577.exe
PID 1700 wrote to memory of 548	1700	EQNEDT32.EXE	69577.exe
PID 548 wrote to memory of 660	548	69577.exe	cmd.exe
PID 548 wrote to memory of 660	548	69577.exe	cmd.exe
PID 548 wrote to memory of 660	548	69577.exe	cmd.exe
PID 548 wrote to memory of 660	548	69577.exe	cmd.exe
PID 660 wrote to memory of 1760	660	cmd.exe	reg.exe
PID 660 wrote to memory of 1760	660	cmd.exe	reg.exe
PID 660 wrote to memory of 1760	660	cmd.exe	reg.exe
PID 660 wrote to memory of 1760	660	cmd.exe	reg.exe
PID 548 wrote to memory of 1620	548	69577.exe	ron.exe
PID 548 wrote to memory of 1620	548	69577.exe	ron.exe
PID 548 wrote to memory of 1620	548	69577.exe	ron.exe
PID 548 wrote to memory of 1620	548	69577.exe	ron.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe
PID 1620 wrote to memory of 1684	1620	ron.exe	InstallUtil.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\IMG_761213.doc.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1636

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1968

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1700

C:\Users\Public\69577.exe
"C:\Users\Public\69577.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:548

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bnye" /t REG_SZ /d "C:\Users\Admin\ron.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:660

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bnye" /t REG_SZ /d "C:\Users\Admin\ron.exe"
4⤵
- Adds Run key to start application
PID:1760

C:\Users\Admin\ron.exe
"C:\Users\Admin\ron.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1684

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\B2LBXH39.txt
MD5
54cafe7a4d89e5451be1b839ddfbfd60

SHA1
f3c2b80626c3ced11e27d9fb709ee437d5183552

SHA256
c410ce60a485724964cfc3a6b2cf53cdffb31d3904c967bddff7d054ba18134e

SHA512
a3970c29277210c5d66ef71279b49c045921225623566784e93590a25cce2c60a29ac78bdcba6cfbb4a406ab6f5965e2789f1e5d801872b8b2cc2e9a43d6465e

Download Submit
C:\Users\Admin\ron.exe
MD5
7fcffb29282e25832ac7c3a046aa5729

SHA1
b1db79940f79143e1ec2fbaef6c7af6ac66601b5

SHA256
f48af72b2049ce9cb61a28086fe47ffad766b26ea9ce27cce0082f435504dc73

SHA512
76a2637ea14bb7ab1ee60881d04e4127b4265ec979d9829fd0fe8cf180c826a397d69759cb5a0f4161b45ca30f3ccbc00a3415deb6aa6a177787d6335dbda52d

Download Submit
C:\Users\Admin\ron.exe
MD5
7fcffb29282e25832ac7c3a046aa5729

SHA1
b1db79940f79143e1ec2fbaef6c7af6ac66601b5

SHA256
f48af72b2049ce9cb61a28086fe47ffad766b26ea9ce27cce0082f435504dc73

SHA512
76a2637ea14bb7ab1ee60881d04e4127b4265ec979d9829fd0fe8cf180c826a397d69759cb5a0f4161b45ca30f3ccbc00a3415deb6aa6a177787d6335dbda52d

Download Submit
C:\Users\Public\69577.exe
MD5
7fcffb29282e25832ac7c3a046aa5729

SHA1
b1db79940f79143e1ec2fbaef6c7af6ac66601b5

SHA256
f48af72b2049ce9cb61a28086fe47ffad766b26ea9ce27cce0082f435504dc73

SHA512
76a2637ea14bb7ab1ee60881d04e4127b4265ec979d9829fd0fe8cf180c826a397d69759cb5a0f4161b45ca30f3ccbc00a3415deb6aa6a177787d6335dbda52d

Download Submit
C:\Users\Public\69577.exe
MD5
7fcffb29282e25832ac7c3a046aa5729

SHA1
b1db79940f79143e1ec2fbaef6c7af6ac66601b5

SHA256
f48af72b2049ce9cb61a28086fe47ffad766b26ea9ce27cce0082f435504dc73

SHA512
76a2637ea14bb7ab1ee60881d04e4127b4265ec979d9829fd0fe8cf180c826a397d69759cb5a0f4161b45ca30f3ccbc00a3415deb6aa6a177787d6335dbda52d

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\ron.exe
MD5
7fcffb29282e25832ac7c3a046aa5729

SHA1
b1db79940f79143e1ec2fbaef6c7af6ac66601b5

SHA256
f48af72b2049ce9cb61a28086fe47ffad766b26ea9ce27cce0082f435504dc73

SHA512
76a2637ea14bb7ab1ee60881d04e4127b4265ec979d9829fd0fe8cf180c826a397d69759cb5a0f4161b45ca30f3ccbc00a3415deb6aa6a177787d6335dbda52d

Download Submit
\Users\Public\69577.exe
MD5
7fcffb29282e25832ac7c3a046aa5729

SHA1
b1db79940f79143e1ec2fbaef6c7af6ac66601b5

SHA256
f48af72b2049ce9cb61a28086fe47ffad766b26ea9ce27cce0082f435504dc73

SHA512
76a2637ea14bb7ab1ee60881d04e4127b4265ec979d9829fd0fe8cf180c826a397d69759cb5a0f4161b45ca30f3ccbc00a3415deb6aa6a177787d6335dbda52d

Download Submit
memory/548-22-0x0000000004EB1000-0x0000000004EB2000-memory.dmp

Filesize
4KB

Download
memory/548-10-0x0000000000000000-mapping.dmp

Download
memory/548-14-0x00000000012E0000-0x00000000012E1000-memory.dmp

Filesize
4KB

Download
memory/548-16-0x0000000004EB0000-0x0000000004EB1000-memory.dmp

Filesize
4KB

Download
memory/548-18-0x00000000002C0000-0x00000000002DE000-memory.dmp

Filesize
120KB

Download
memory/548-19-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/548-13-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

Filesize
6.9MB

Download
memory/660-20-0x0000000000000000-mapping.dmp

Download
memory/900-8-0x000007FEF6380000-0x000007FEF65FA000-memory.dmp

Filesize
2.5MB

Download
memory/1620-30-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/1620-24-0x0000000000000000-mapping.dmp

Download
memory/1620-35-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download
memory/1620-34-0x0000000000900000-0x000000000090B000-memory.dmp

Filesize
44KB

Download
memory/1620-27-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-28-0x0000000001170000-0x0000000001171000-memory.dmp

Filesize
4KB

Download
memory/1636-3-0x00000000702A1000-0x00000000702A3000-memory.dmp

Filesize
8KB

Download
memory/1636-2-0x0000000072821000-0x0000000072824000-memory.dmp

Filesize
12KB

Download
memory/1636-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1684-42-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1684-44-0x0000000004A90000-0x0000000004A91000-memory.dmp

Filesize
4KB

Download
memory/1684-38-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1684-39-0x0000000000463A9E-mapping.dmp

Download
memory/1684-41-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

Filesize
6.9MB

Download
memory/1700-7-0x00000000761E1000-0x00000000761E3000-memory.dmp

Filesize
8KB

Download
memory/1760-21-0x0000000000000000-mapping.dmp

Download
memory/1968-5-0x0000000000000000-mapping.dmp

Download
memory/1968-6-0x000007FEFBEC1000-0x000007FEFBEC3000-memory.dmp

Filesize
8KB

Download