snakekeylogger | 4fdf2ab9302d8eb10903a5c535e688941be99ec4130ba4fe670ae3ca84fa9d94

Analysis

max time kernel
70s
max time network
138s
platform
windows7_x64
resource
win7v20201028
submitted
20-01-2021 06:38

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General

Target

IMG_40317.doc.rtf
Size

393KB
MD5

38dee6d5471c99e1cea3ab5470685f83
SHA1

9a35e6ea195e691b9f42b2d153494d1fe16450f5
SHA256

4fdf2ab9302d8eb10903a5c535e688941be99ec4130ba4fe670ae3ca84fa9d94
SHA512

ff394156df1fcd66eab71adc631634a15a85aae6ca6b4a38a54f0e9648bc84baa6f90816189e999e76540a7c1b26fd661bef647d6c1975542c32206499bbe0d4

Score

10^/10

snakekeylogger keylogger 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/300-35-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/300-36-0x000000000046240E-mapping.dmp	family_snakekeylogger
behavioral1/memory/300-39-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1800 EQNEDT32.EXE
9 1800 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

69577.exebsys.exeInstallUtil.exe

pid process

928 69577.exe
1308 bsys.exe
300 InstallUtil.exe
Drops startup file 1 IoCs

Processes:

69577.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bsys.lnk 69577.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE69577.exebsys.exe

pid process

1800 EQNEDT32.EXE
928 69577.exe
1308 bsys.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
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

14 freegeoip.app
10 checkip.dyndns.org
13 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

bsys.exe

description pid process target process

PID 1308 set thread context of 300 1308 bsys.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

1800 EQNEDT32.EXE

flow	pid	process
7	1800	EQNEDT32.EXE
9	1800	EQNEDT32.EXE

pid	process
928	69577.exe
1308	bsys.exe
300	InstallUtil.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bsys.lnk	69577.exe

pid	process
1800	EQNEDT32.EXE
928	69577.exe
1308	bsys.exe

flow	ioc
14	freegeoip.app
10	checkip.dyndns.org
13	freegeoip.app

description	pid	process	target process
PID 1308 set thread context of 300	1308	bsys.exe	InstallUtil.exe

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

pid	process
1800	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	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 (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
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
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 (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1660 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

69577.exebsys.exeInstallUtil.exe

pid process

928 69577.exe
928 69577.exe
928 69577.exe
928 69577.exe
928 69577.exe
1308 bsys.exe
1308 bsys.exe
300 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exebsys.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 928 69577.exe
Token: SeDebugPrivilege 1308 bsys.exe
Token: SeDebugPrivilege 300 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1660 WINWORD.EXE
1660 WINWORD.EXE

pid	process
1660	WINWORD.EXE

pid	process
928	69577.exe
928	69577.exe
928	69577.exe
928	69577.exe
928	69577.exe
1308	bsys.exe
1308	bsys.exe
300	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	928	69577.exe
Token: SeDebugPrivilege	1308	bsys.exe
Token: SeDebugPrivilege	300	InstallUtil.exe

pid	process
1660	WINWORD.EXE
1660	WINWORD.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.exebsys.exe

description	pid	process	target process
PID 1660 wrote to memory of 1420	1660	WINWORD.EXE	splwow64.exe
PID 1660 wrote to memory of 1420	1660	WINWORD.EXE	splwow64.exe
PID 1660 wrote to memory of 1420	1660	WINWORD.EXE	splwow64.exe
PID 1660 wrote to memory of 1420	1660	WINWORD.EXE	splwow64.exe
PID 1800 wrote to memory of 928	1800	EQNEDT32.EXE	69577.exe
PID 1800 wrote to memory of 928	1800	EQNEDT32.EXE	69577.exe
PID 1800 wrote to memory of 928	1800	EQNEDT32.EXE	69577.exe
PID 1800 wrote to memory of 928	1800	EQNEDT32.EXE	69577.exe
PID 928 wrote to memory of 1308	928	69577.exe	bsys.exe
PID 928 wrote to memory of 1308	928	69577.exe	bsys.exe
PID 928 wrote to memory of 1308	928	69577.exe	bsys.exe
PID 928 wrote to memory of 1308	928	69577.exe	bsys.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.exe	InstallUtil.exe
PID 1308 wrote to memory of 300	1308	bsys.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_40317.doc.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1660

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:1800

C:\Users\Public\69577.exe
"C:\Users\Public\69577.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:928

C:\Users\Admin\bsys.exe
"C:\Users\Admin\bsys.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1308

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:300

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

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\C14V32KB.txt
MD5
f93fc6668e34f0e6786b6fb20663cd64

SHA1
b4cc390becba9da5724a97b2b8dfd17632cdbf4f

SHA256
0a61a3ee0a6ed12c17cd5c56f70a03923bc4631da68b8015128780bfdde9786f

SHA512
b61f73521883d3ddd9069a76dddd231aad9232d69a5b0694b52d07001c04d2cbe960bdfec98f632616be96a57c9de7d330f736f46154c98ecc90435d07842811

Download Submit
C:\Users\Admin\bsys.exe
MD5
9da79ca571b3427fbd82003b94ee08d2

SHA1
3e00a65e6f87ffe3d210e41fe0fef1017be59d9b

SHA256
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04

SHA512
033edcb711c8c38de1f0acdbca86d1e624602c4c052773a06bb5145ec80f77a42407b072d2c36454878b6f6e1a026d0ce5cca0e5f7e2688ee2e5c9d3918fb945

Download Submit
C:\Users\Admin\bsys.exe
MD5
9da79ca571b3427fbd82003b94ee08d2

SHA1
3e00a65e6f87ffe3d210e41fe0fef1017be59d9b

SHA256
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04

SHA512
033edcb711c8c38de1f0acdbca86d1e624602c4c052773a06bb5145ec80f77a42407b072d2c36454878b6f6e1a026d0ce5cca0e5f7e2688ee2e5c9d3918fb945

Download Submit
C:\Users\Public\69577.exe
MD5
9da79ca571b3427fbd82003b94ee08d2

SHA1
3e00a65e6f87ffe3d210e41fe0fef1017be59d9b

SHA256
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04

SHA512
033edcb711c8c38de1f0acdbca86d1e624602c4c052773a06bb5145ec80f77a42407b072d2c36454878b6f6e1a026d0ce5cca0e5f7e2688ee2e5c9d3918fb945

Download Submit
C:\Users\Public\69577.exe
MD5
9da79ca571b3427fbd82003b94ee08d2

SHA1
3e00a65e6f87ffe3d210e41fe0fef1017be59d9b

SHA256
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04

SHA512
033edcb711c8c38de1f0acdbca86d1e624602c4c052773a06bb5145ec80f77a42407b072d2c36454878b6f6e1a026d0ce5cca0e5f7e2688ee2e5c9d3918fb945

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\bsys.exe
MD5
9da79ca571b3427fbd82003b94ee08d2

SHA1
3e00a65e6f87ffe3d210e41fe0fef1017be59d9b

SHA256
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04

SHA512
033edcb711c8c38de1f0acdbca86d1e624602c4c052773a06bb5145ec80f77a42407b072d2c36454878b6f6e1a026d0ce5cca0e5f7e2688ee2e5c9d3918fb945

Download Submit
\Users\Public\69577.exe
MD5
9da79ca571b3427fbd82003b94ee08d2

SHA1
3e00a65e6f87ffe3d210e41fe0fef1017be59d9b

SHA256
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04

SHA512
033edcb711c8c38de1f0acdbca86d1e624602c4c052773a06bb5145ec80f77a42407b072d2c36454878b6f6e1a026d0ce5cca0e5f7e2688ee2e5c9d3918fb945

Download Submit
memory/300-35-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/300-36-0x000000000046240E-mapping.dmp

Download
memory/300-42-0x00000000048C0000-0x00000000048C1000-memory.dmp

Filesize
4KB

Download
memory/300-38-0x000000006B3A0000-0x000000006BA8E000-memory.dmp

Filesize
6.9MB

Download
memory/300-39-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/928-19-0x00000000048E1000-0x00000000048E2000-memory.dmp

Filesize
4KB

Download
memory/928-18-0x00000000048E0000-0x00000000048E1000-memory.dmp

Filesize
4KB

Download
memory/928-17-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/928-10-0x0000000000000000-mapping.dmp

Download
memory/928-16-0x00000000001F0000-0x000000000020E000-memory.dmp

Filesize
120KB

Download
memory/928-14-0x0000000000A70000-0x0000000000A71000-memory.dmp

Filesize
4KB

Download
memory/928-13-0x000000006B3A0000-0x000000006BA8E000-memory.dmp

Filesize
6.9MB

Download
memory/1308-25-0x0000000000F40000-0x0000000000F41000-memory.dmp

Filesize
4KB

Download
memory/1308-29-0x0000000004A80000-0x0000000004A81000-memory.dmp

Filesize
4KB

Download
memory/1308-30-0x0000000000DD0000-0x0000000000DDB000-memory.dmp

Filesize
44KB

Download
memory/1308-31-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

Filesize
4KB

Download
memory/1308-24-0x000000006B3A0000-0x000000006BA8E000-memory.dmp

Filesize
6.9MB

Download
memory/1308-21-0x0000000000000000-mapping.dmp

Download
memory/1308-34-0x0000000004A81000-0x0000000004A82000-memory.dmp

Filesize
4KB

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

Filesize
8KB

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

Download
memory/1660-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1660-3-0x0000000070361000-0x0000000070363000-memory.dmp

Filesize
8KB

Download
memory/1660-2-0x00000000728E1000-0x00000000728E4000-memory.dmp

Filesize
12KB

Download
memory/1720-8-0x000007FEF6460000-0x000007FEF66DA000-memory.dmp

Filesize
2.5MB

Download
memory/1800-7-0x0000000075F21000-0x0000000075F23000-memory.dmp

Filesize
8KB

Download