snakekeylogger | 009dce24ccd8d3ee0d0480da84e0043930e6021e80ab90264497b057aad28cd6

Analysis

max time kernel
70s
max time network
139s
platform
windows7_x64
resource
win7v20201028
submitted
26-01-2021 13:11

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General

Target

IMG-51033.doc
Size

798KB
MD5

b4364ca8f830b2ab2c4fdc8a316d2510
SHA1

d489903c28598eb344d2581304206d55afd9ca2e
SHA256

009dce24ccd8d3ee0d0480da84e0043930e6021e80ab90264497b057aad28cd6
SHA512

b6818b1576ec9d02c0d2981a8a7fb7d706f42d43be57bf7cb5141763289cc09580ca50b01818995a2005920560c316825b12e1b477f0129f6235cec08c73aded

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/1756-38-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/1756-39-0x000000000046370E-mapping.dmp	family_snakekeylogger
behavioral1/memory/1756-42-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1752 EQNEDT32.EXE
9 1752 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

69577.exeron.exeInstallUtil.exe

pid process

1056 69577.exe
1120 ron.exe
1756 InstallUtil.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE69577.exeron.exe

pid process

1752 EQNEDT32.EXE
1056 69577.exe
1120 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
7	1752	EQNEDT32.EXE
9	1752	EQNEDT32.EXE

pid	process
1752	EQNEDT32.EXE
1056	69577.exe
1120	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

17 freegeoip.app
13 checkip.dyndns.org
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 1120 set thread context of 1756 1120 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

1752 EQNEDT32.EXE

flow	ioc
17	freegeoip.app
13	checkip.dyndns.org
16	freegeoip.app

description	pid	process	target process
PID 1120 set thread context of 1756	1120	ron.exe	InstallUtil.exe

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

pid	process
1752	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
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\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	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
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
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 (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

1676 WINWORD.EXE

pid	process
1676	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

69577.exeron.exeInstallUtil.exe

pid	process
1056	69577.exe
1056	69577.exe
1056	69577.exe
1056	69577.exe
1056	69577.exe
1120	ron.exe
1120	ron.exe
1756	InstallUtil.exe
1756	InstallUtil.exe
1756	InstallUtil.exe
1756	InstallUtil.exe
1756	InstallUtil.exe
1756	InstallUtil.exe
1756	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exeron.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1056 69577.exe
Token: SeDebugPrivilege 1120 ron.exe
Token: SeDebugPrivilege 1756 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1676 WINWORD.EXE
1676 WINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	1056	69577.exe
Token: SeDebugPrivilege	1120	ron.exe
Token: SeDebugPrivilege	1756	InstallUtil.exe

pid	process
1676	WINWORD.EXE
1676	WINWORD.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.execmd.exeron.exe

description	pid	process	target process
PID 1676 wrote to memory of 1420	1676	WINWORD.EXE	splwow64.exe
PID 1676 wrote to memory of 1420	1676	WINWORD.EXE	splwow64.exe
PID 1676 wrote to memory of 1420	1676	WINWORD.EXE	splwow64.exe
PID 1676 wrote to memory of 1420	1676	WINWORD.EXE	splwow64.exe
PID 1752 wrote to memory of 1056	1752	EQNEDT32.EXE	69577.exe
PID 1752 wrote to memory of 1056	1752	EQNEDT32.EXE	69577.exe
PID 1752 wrote to memory of 1056	1752	EQNEDT32.EXE	69577.exe
PID 1752 wrote to memory of 1056	1752	EQNEDT32.EXE	69577.exe
PID 1056 wrote to memory of 1780	1056	69577.exe	cmd.exe
PID 1056 wrote to memory of 1780	1056	69577.exe	cmd.exe
PID 1056 wrote to memory of 1780	1056	69577.exe	cmd.exe
PID 1056 wrote to memory of 1780	1056	69577.exe	cmd.exe
PID 1780 wrote to memory of 1588	1780	cmd.exe	reg.exe
PID 1780 wrote to memory of 1588	1780	cmd.exe	reg.exe
PID 1780 wrote to memory of 1588	1780	cmd.exe	reg.exe
PID 1780 wrote to memory of 1588	1780	cmd.exe	reg.exe
PID 1056 wrote to memory of 1120	1056	69577.exe	ron.exe
PID 1056 wrote to memory of 1120	1056	69577.exe	ron.exe
PID 1056 wrote to memory of 1120	1056	69577.exe	ron.exe
PID 1056 wrote to memory of 1120	1056	69577.exe	ron.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	ron.exe	InstallUtil.exe
PID 1120 wrote to memory of 1756	1120	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-51033.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1420

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:1752

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:1056

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:1780

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:1588

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:1120

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:1756

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\UTQD6E6G.txt
MD5
94490dcae536e2dae33984861a52ba4a

SHA1
4f3cc0dc06c62d198eb99d73800a82dc02e9962a

SHA256
71e647e8369e10d829609e1eb57a605661d11448a0d5e6191ef6125e52f647b6

SHA512
5defa7e7760cf9936e63dce4fc5da26fd2c66de5864b6e6740f4ec0620f325b2d0df2a794bb2e45cc87547448542ccd955ce08c560a6c3acbefc78b60b40aebe

Download Submit
C:\Users\Admin\ron.exe
MD5
9b465f73f661bc341cf2f0c2109c727b

SHA1
d050394cd55a107df5ae6b55e7c129d764cf5159

SHA256
e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

SHA512
4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d

Download Submit
C:\Users\Admin\ron.exe
MD5
9b465f73f661bc341cf2f0c2109c727b

SHA1
d050394cd55a107df5ae6b55e7c129d764cf5159

SHA256
e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

SHA512
4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d

Download Submit
C:\Users\Public\69577.exe
MD5
9b465f73f661bc341cf2f0c2109c727b

SHA1
d050394cd55a107df5ae6b55e7c129d764cf5159

SHA256
e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

SHA512
4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d

Download Submit
C:\Users\Public\69577.exe
MD5
9b465f73f661bc341cf2f0c2109c727b

SHA1
d050394cd55a107df5ae6b55e7c129d764cf5159

SHA256
e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

SHA512
4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\ron.exe
MD5
9b465f73f661bc341cf2f0c2109c727b

SHA1
d050394cd55a107df5ae6b55e7c129d764cf5159

SHA256
e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

SHA512
4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d

Download Submit
\Users\Public\69577.exe
MD5
9b465f73f661bc341cf2f0c2109c727b

SHA1
d050394cd55a107df5ae6b55e7c129d764cf5159

SHA256
e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

SHA512
4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d

Download Submit
memory/1056-22-0x00000000021C1000-0x00000000021C2000-memory.dmp

Filesize
4KB

Download
memory/1056-14-0x0000000000B90000-0x0000000000B91000-memory.dmp

Filesize
4KB

Download
memory/1056-17-0x00000000004E0000-0x00000000004FE000-memory.dmp

Filesize
120KB

Download
memory/1056-18-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/1056-19-0x00000000021C0000-0x00000000021C1000-memory.dmp

Filesize
4KB

Download
memory/1056-13-0x000000006B3A0000-0x000000006BA8E000-memory.dmp

Filesize
6.9MB

Download
memory/1056-10-0x0000000000000000-mapping.dmp

Download
memory/1120-27-0x000000006B3A0000-0x000000006BA8E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-35-0x00000000023A0000-0x00000000023A1000-memory.dmp

Filesize
4KB

Download
memory/1120-34-0x0000000002210000-0x000000000221B000-memory.dmp

Filesize
44KB

Download
memory/1120-32-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/1120-28-0x0000000000830000-0x0000000000831000-memory.dmp

Filesize
4KB

Download
memory/1120-24-0x0000000000000000-mapping.dmp

Download
memory/1420-5-0x0000000000000000-mapping.dmp

Download
memory/1420-6-0x000007FEFBDE1000-0x000007FEFBDE3000-memory.dmp

Filesize
8KB

Download
memory/1588-21-0x0000000000000000-mapping.dmp

Download
memory/1640-8-0x000007FEF6460000-0x000007FEF66DA000-memory.dmp

Filesize
2.5MB

Download
memory/1676-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1676-2-0x00000000728E1000-0x00000000728E4000-memory.dmp

Filesize
12KB

Download
memory/1676-3-0x0000000070361000-0x0000000070363000-memory.dmp

Filesize
8KB

Download
memory/1752-7-0x0000000075F21000-0x0000000075F23000-memory.dmp

Filesize
8KB

Download
memory/1756-38-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1756-39-0x000000000046370E-mapping.dmp

Download
memory/1756-41-0x000000006B3A0000-0x000000006BA8E000-memory.dmp

Filesize
6.9MB

Download
memory/1756-42-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1756-44-0x0000000004880000-0x0000000004881000-memory.dmp

Filesize
4KB

Download
memory/1780-20-0x0000000000000000-mapping.dmp

Download