snakekeylogger | 72dc481fa648ff1ade2754d8efafc1542707855755e230a5400942de42080e51

Analysis

max time kernel
70s
max time network
135s
platform
windows7_x64
resource
win7v20201028
submitted
27-01-2021 18:01

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General

Target

IMG-79108.doc.rtf
Size

1.7MB
MD5

a9469c661aa9db91e728da3246956837
SHA1

13cd514cd201df7ff259f06e3530d43464c87d8a
SHA256

72dc481fa648ff1ade2754d8efafc1542707855755e230a5400942de42080e51
SHA512

fa1e95eebe0edc14e33f0692febffcce844aeeb2056e835c3f52eedc22b65ef72625fc055ae6a1480b080660c236dda960283dbce15bdcf98e0f2bd907255eaf

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/1792-38-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/1792-39-0x000000000046370E-mapping.dmp	family_snakekeylogger
behavioral1/memory/1792-42-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 2000 EQNEDT32.EXE
8 2000 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

69577.exemokl.exeInstallUtil.exe

pid process

524 69577.exe
2000 mokl.exe
1792 InstallUtil.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE69577.exemokl.exe

pid process

2000 EQNEDT32.EXE
524 69577.exe
2000 mokl.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	2000	EQNEDT32.EXE
8	2000	EQNEDT32.EXE

pid	process
2000	EQNEDT32.EXE
524	69577.exe
2000	mokl.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\isdrt = "C:\\Users\\Admin\\mokl.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:

mokl.exe

description pid process target process

PID 2000 set thread context of 1792 2000 mokl.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

2000 EQNEDT32.EXE

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

description	pid	process	target process
PID 2000 set thread context of 1792	2000	mokl.exe	InstallUtil.exe

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

pid	process
2000	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\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\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
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 (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

1012 WINWORD.EXE

pid	process
1012	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

69577.exemokl.exeInstallUtil.exe

pid	process
524	69577.exe
524	69577.exe
524	69577.exe
524	69577.exe
524	69577.exe
2000	mokl.exe
2000	mokl.exe
1792	InstallUtil.exe
1792	InstallUtil.exe
1792	InstallUtil.exe
1792	InstallUtil.exe
1792	InstallUtil.exe
1792	InstallUtil.exe
1792	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exemokl.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 524 69577.exe
Token: SeDebugPrivilege 2000 mokl.exe
Token: SeDebugPrivilege 1792 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1012 WINWORD.EXE
1012 WINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	524	69577.exe
Token: SeDebugPrivilege	2000	mokl.exe
Token: SeDebugPrivilege	1792	InstallUtil.exe

pid	process
1012	WINWORD.EXE
1012	WINWORD.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.execmd.exemokl.exe

description	pid	process	target process
PID 1012 wrote to memory of 1480	1012	WINWORD.EXE	splwow64.exe
PID 1012 wrote to memory of 1480	1012	WINWORD.EXE	splwow64.exe
PID 1012 wrote to memory of 1480	1012	WINWORD.EXE	splwow64.exe
PID 1012 wrote to memory of 1480	1012	WINWORD.EXE	splwow64.exe
PID 2000 wrote to memory of 524	2000	EQNEDT32.EXE	69577.exe
PID 2000 wrote to memory of 524	2000	EQNEDT32.EXE	69577.exe
PID 2000 wrote to memory of 524	2000	EQNEDT32.EXE	69577.exe
PID 2000 wrote to memory of 524	2000	EQNEDT32.EXE	69577.exe
PID 524 wrote to memory of 1764	524	69577.exe	cmd.exe
PID 524 wrote to memory of 1764	524	69577.exe	cmd.exe
PID 524 wrote to memory of 1764	524	69577.exe	cmd.exe
PID 524 wrote to memory of 1764	524	69577.exe	cmd.exe
PID 1764 wrote to memory of 1108	1764	cmd.exe	reg.exe
PID 1764 wrote to memory of 1108	1764	cmd.exe	reg.exe
PID 1764 wrote to memory of 1108	1764	cmd.exe	reg.exe
PID 1764 wrote to memory of 1108	1764	cmd.exe	reg.exe
PID 524 wrote to memory of 2000	524	69577.exe	mokl.exe
PID 524 wrote to memory of 2000	524	69577.exe	mokl.exe
PID 524 wrote to memory of 2000	524	69577.exe	mokl.exe
PID 524 wrote to memory of 2000	524	69577.exe	mokl.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.exe	InstallUtil.exe
PID 2000 wrote to memory of 1792	2000	mokl.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-79108.doc.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1012

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1480

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:2000

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:524

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "isdrt" /t REG_SZ /d "C:\Users\Admin\mokl.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "isdrt" /t REG_SZ /d "C:\Users\Admin\mokl.exe"
4⤵
- Adds Run key to start application
PID:1108

C:\Users\Admin\mokl.exe
"C:\Users\Admin\mokl.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000

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:1792

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\QLVRK88I.txt
MD5
b0c58d1ef9d143b77926b2133fcd3c26

SHA1
f67f3bcf0ac7b69df089f0b33b10b39bc4d1938e

SHA256
945232e258c2b8224de1bc7aa41194f7e005f831a8396bd290338e892fc7eb7c

SHA512
e5ae5bf1545b3bed18c554bcc9ae9d56f2aafa7470a91fe3a5f0939b41ed9eb595b7986720f6437d3269af33c92f8bfcc8defe35f69a720a1dc457c9ac788145

Download Submit
C:\Users\Admin\mokl.exe
MD5
98119f6305337412e58f0d3ca740a227

SHA1
aed7c3f9910052933f7bf008eae1163af1af64dc

SHA256
cc67e6c53e9a4740f106f84faefad1c32b742a9f1ca69f519e584aa9e3491518

SHA512
5c34f89dddf66ffd2a02b3c62117d2e88c873ef30ecb2de82d303df30f89147d72a7324dac953c3d83349f998412114fb98c1c1dc0ecb76dbc7b1e1fb5608339

Download Submit
C:\Users\Admin\mokl.exe
MD5
98119f6305337412e58f0d3ca740a227

SHA1
aed7c3f9910052933f7bf008eae1163af1af64dc

SHA256
cc67e6c53e9a4740f106f84faefad1c32b742a9f1ca69f519e584aa9e3491518

SHA512
5c34f89dddf66ffd2a02b3c62117d2e88c873ef30ecb2de82d303df30f89147d72a7324dac953c3d83349f998412114fb98c1c1dc0ecb76dbc7b1e1fb5608339

Download Submit
C:\Users\Public\69577.exe
MD5
98119f6305337412e58f0d3ca740a227

SHA1
aed7c3f9910052933f7bf008eae1163af1af64dc

SHA256
cc67e6c53e9a4740f106f84faefad1c32b742a9f1ca69f519e584aa9e3491518

SHA512
5c34f89dddf66ffd2a02b3c62117d2e88c873ef30ecb2de82d303df30f89147d72a7324dac953c3d83349f998412114fb98c1c1dc0ecb76dbc7b1e1fb5608339

Download Submit
C:\Users\Public\69577.exe
MD5
98119f6305337412e58f0d3ca740a227

SHA1
aed7c3f9910052933f7bf008eae1163af1af64dc

SHA256
cc67e6c53e9a4740f106f84faefad1c32b742a9f1ca69f519e584aa9e3491518

SHA512
5c34f89dddf66ffd2a02b3c62117d2e88c873ef30ecb2de82d303df30f89147d72a7324dac953c3d83349f998412114fb98c1c1dc0ecb76dbc7b1e1fb5608339

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\mokl.exe
MD5
98119f6305337412e58f0d3ca740a227

SHA1
aed7c3f9910052933f7bf008eae1163af1af64dc

SHA256
cc67e6c53e9a4740f106f84faefad1c32b742a9f1ca69f519e584aa9e3491518

SHA512
5c34f89dddf66ffd2a02b3c62117d2e88c873ef30ecb2de82d303df30f89147d72a7324dac953c3d83349f998412114fb98c1c1dc0ecb76dbc7b1e1fb5608339

Download Submit
\Users\Public\69577.exe
MD5
98119f6305337412e58f0d3ca740a227

SHA1
aed7c3f9910052933f7bf008eae1163af1af64dc

SHA256
cc67e6c53e9a4740f106f84faefad1c32b742a9f1ca69f519e584aa9e3491518

SHA512
5c34f89dddf66ffd2a02b3c62117d2e88c873ef30ecb2de82d303df30f89147d72a7324dac953c3d83349f998412114fb98c1c1dc0ecb76dbc7b1e1fb5608339

Download Submit
memory/524-22-0x0000000004E01000-0x0000000004E02000-memory.dmp

Filesize
4KB

Download
memory/524-13-0x000000006B910000-0x000000006BFFE000-memory.dmp

Filesize
6.9MB

Download
memory/524-14-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

Filesize
4KB

Download
memory/524-16-0x0000000004E00000-0x0000000004E01000-memory.dmp

Filesize
4KB

Download
memory/524-18-0x00000000005A0000-0x00000000005BE000-memory.dmp

Filesize
120KB

Download
memory/524-19-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/524-10-0x0000000000000000-mapping.dmp

Download
memory/1012-3-0x00000000709E1000-0x00000000709E3000-memory.dmp

Filesize
8KB

Download
memory/1012-2-0x0000000072F61000-0x0000000072F64000-memory.dmp

Filesize
12KB

Download
memory/1012-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1108-21-0x0000000000000000-mapping.dmp

Download
memory/1224-8-0x000007FEF7D90000-0x000007FEF800A000-memory.dmp

Filesize
2.5MB

Download
memory/1480-5-0x0000000000000000-mapping.dmp

Download
memory/1480-6-0x000007FEFC601000-0x000007FEFC603000-memory.dmp

Filesize
8KB

Download
memory/1764-20-0x0000000000000000-mapping.dmp

Download
memory/1792-38-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1792-44-0x0000000004A30000-0x0000000004A31000-memory.dmp

Filesize
4KB

Download
memory/1792-42-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1792-41-0x000000006B910000-0x000000006BFFE000-memory.dmp

Filesize
6.9MB

Download
memory/1792-39-0x000000000046370E-mapping.dmp

Download
memory/2000-7-0x00000000761E1000-0x00000000761E3000-memory.dmp

Filesize
8KB

Download
memory/2000-27-0x000000006B910000-0x000000006BFFE000-memory.dmp

Filesize
6.9MB

Download
memory/2000-24-0x0000000000000000-mapping.dmp

Download
memory/2000-35-0x0000000000870000-0x0000000000871000-memory.dmp

Filesize
4KB

Download
memory/2000-34-0x0000000000820000-0x000000000082B000-memory.dmp

Filesize
44KB

Download
memory/2000-30-0x0000000004CB0000-0x0000000004CB1000-memory.dmp

Filesize
4KB

Download
memory/2000-28-0x0000000000E20000-0x0000000000E21000-memory.dmp

Filesize
4KB

Download