snakekeylogger | d52ad198b3121b0cf748339177fb2987b198cf27c82c0d7ffbb26418557a9a89

Analysis

max time kernel
72s
max time network
151s
platform
windows7_x64
resource
win7v20201028
submitted
20-01-2021 06:38

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General

Target

Order IMG_501032.doc
Size

622KB
MD5

7245e4053bd911622d0f073739a36c1e
SHA1

775948cde14fdf9a0bf375cd5a3dbb07cf7a1aa7
SHA256

d52ad198b3121b0cf748339177fb2987b198cf27c82c0d7ffbb26418557a9a89
SHA512

241a2b1e1bb682ee936dfb90e95631bb106bc7521503befc4f3ea22d4bb6da3de117259f8827c23970d271f13fb83cb1abd778721b35a30398aed572701efbe8

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/576-36-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/576-37-0x000000000046382E-mapping.dmp	family_snakekeylogger
behavioral1/memory/576-40-0x0000000000400000-0x0000000000468000-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

1080 69577.exe
1560 bsys.exe
576 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
1080 69577.exe
1560 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

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

Processes:

bsys.exe

description pid process target process

PID 1560 set thread context of 576 1560 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

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
1080	69577.exe
1560	bsys.exe

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

description	pid	process	target process
PID 1560 set thread context of 576	1560	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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1668 WINWORD.EXE

pid	process
1668	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

69577.exebsys.exeInstallUtil.exe

pid	process
1080	69577.exe
1080	69577.exe
1080	69577.exe
1560	bsys.exe
1560	bsys.exe
576	InstallUtil.exe
576	InstallUtil.exe
576	InstallUtil.exe
576	InstallUtil.exe
576	InstallUtil.exe
576	InstallUtil.exe
576	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exebsys.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1080 69577.exe
Token: SeDebugPrivilege 1560 bsys.exe
Token: SeDebugPrivilege 576 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1668 WINWORD.EXE
1668 WINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	1080	69577.exe
Token: SeDebugPrivilege	1560	bsys.exe
Token: SeDebugPrivilege	576	InstallUtil.exe

pid	process
1668	WINWORD.EXE
1668	WINWORD.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.exebsys.exe

description	pid	process	target process
PID 1668 wrote to memory of 2028	1668	WINWORD.EXE	splwow64.exe
PID 1668 wrote to memory of 2028	1668	WINWORD.EXE	splwow64.exe
PID 1668 wrote to memory of 2028	1668	WINWORD.EXE	splwow64.exe
PID 1668 wrote to memory of 2028	1668	WINWORD.EXE	splwow64.exe
PID 1800 wrote to memory of 1080	1800	EQNEDT32.EXE	69577.exe
PID 1800 wrote to memory of 1080	1800	EQNEDT32.EXE	69577.exe
PID 1800 wrote to memory of 1080	1800	EQNEDT32.EXE	69577.exe
PID 1800 wrote to memory of 1080	1800	EQNEDT32.EXE	69577.exe
PID 1080 wrote to memory of 1560	1080	69577.exe	bsys.exe
PID 1080 wrote to memory of 1560	1080	69577.exe	bsys.exe
PID 1080 wrote to memory of 1560	1080	69577.exe	bsys.exe
PID 1080 wrote to memory of 1560	1080	69577.exe	bsys.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	bsys.exe	InstallUtil.exe
PID 1560 wrote to memory of 576	1560	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\Order IMG_501032.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:2028

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:1080

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:1560

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:576

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\DTOWF7T9.txt
MD5
32ea7070e8544ac822625eeb6c840e03

SHA1
f3d7538af6170569ca43399f42f7f04bb5955804

SHA256
e8ed12e212d1c5678eaceba4d4cfcd27f8cf0278f9ef41bfcb9b568d9ea276cc

SHA512
8b51c356c26c61ad58bbfa21d3be46716aede4e2fd53c74aba6aadeb4d1fd10d26b6c191d15931bfe85acf0b7f5f7ccc20eeed1c2332671033e5c74704352447

Download Submit
C:\Users\Admin\bsys.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
C:\Users\Admin\bsys.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
C:\Users\Public\69577.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
C:\Users\Public\69577.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\bsys.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
\Users\Public\69577.exe
MD5
b2aeb4b06aabde854d9d2ddf06424178

SHA1
07258d08ec2d9dafbced67f3b7ebf60cdb76268a

SHA256
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1

SHA512
d89ad16ecea89f51369f4189db3ba12d80ed14f6e6c5a18a245300a20cfd8db91ab4a0ea286dfe90a8d22b1a15caf4d4aba818a14e35513e2bd52b9e90689482

Download Submit
memory/576-40-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/576-42-0x0000000000360000-0x0000000000361000-memory.dmp

Filesize
4KB

Download
memory/576-36-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/576-37-0x000000000046382E-mapping.dmp

Download
memory/576-39-0x000000006AD10000-0x000000006B3FE000-memory.dmp

Filesize
6.9MB

Download
memory/1080-17-0x0000000000410000-0x0000000000411000-memory.dmp

Filesize
4KB

Download
memory/1080-18-0x0000000004B00000-0x0000000004B01000-memory.dmp

Filesize
4KB

Download
memory/1080-20-0x0000000004B01000-0x0000000004B02000-memory.dmp

Filesize
4KB

Download
memory/1080-10-0x0000000000000000-mapping.dmp

Download
memory/1080-16-0x00000000003F0000-0x000000000040E000-memory.dmp

Filesize
120KB

Download
memory/1080-14-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1080-13-0x000000006AD10000-0x000000006B3FE000-memory.dmp

Filesize
6.9MB

Download
memory/1560-25-0x000000006AD10000-0x000000006B3FE000-memory.dmp

Filesize
6.9MB

Download
memory/1560-35-0x0000000004BA1000-0x0000000004BA2000-memory.dmp

Filesize
4KB

Download
memory/1560-30-0x0000000004BA0000-0x0000000004BA1000-memory.dmp

Filesize
4KB

Download
memory/1560-31-0x0000000000640000-0x000000000064B000-memory.dmp

Filesize
44KB

Download
memory/1560-32-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/1560-22-0x0000000000000000-mapping.dmp

Download
memory/1560-26-0x0000000000F30000-0x0000000000F31000-memory.dmp

Filesize
4KB

Download
memory/1620-8-0x000007FEF7080000-0x000007FEF72FA000-memory.dmp

Filesize
2.5MB

Download
memory/1668-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1668-2-0x0000000072301000-0x0000000072304000-memory.dmp

Filesize
12KB

Download
memory/1668-19-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download
memory/1668-3-0x000000006FD81000-0x000000006FD83000-memory.dmp

Filesize
8KB

Download
memory/1800-7-0x0000000074B31000-0x0000000074B33000-memory.dmp

Filesize
8KB

Download
memory/2028-5-0x0000000000000000-mapping.dmp

Download
memory/2028-6-0x000007FEFB6F1000-0x000007FEFB6F3000-memory.dmp

Filesize
8KB

Download