snakekeylogger | a37120959c7a4cd33bebb1d205848e82db6676948da5e2ae7ce313547486da6e

Analysis

max time kernel
150s
max time network
134s
platform
windows7_x64
resource
win7v20201028
submitted
18-01-2021 18:46

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General

Target

IMG_78011.doc
Size

378KB
MD5

8f0e485e9f232c84f78c011167c38f28
SHA1

8eac77339b0ab53717dee58e81bc6bc532521737
SHA256

a37120959c7a4cd33bebb1d205848e82db6676948da5e2ae7ce313547486da6e
SHA512

7d002e4ebfbd92e9eb9b60e1791b44f5097629811d17798a04130ce9ecae75ffdd3d90eb064a1185f2c443927b4aae6c53385505360d8082576a5cf0a34a6ec2

Score

10^/10

snakekeylogger keylogger persistence 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/628-37-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/628-38-0x00000000004638FE-mapping.dmp	family_snakekeylogger
behavioral1/memory/628-41-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1756 EQNEDT32.EXE
9 1756 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

69577.exejra.exeInstallUtil.exe

pid process

1072 69577.exe
1940 jra.exe
628 InstallUtil.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE69577.exejra.exe

pid process

1756 EQNEDT32.EXE
1072 69577.exe
1940 jra.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	1756	EQNEDT32.EXE
9	1756	EQNEDT32.EXE

pid	process
1756	EQNEDT32.EXE
1072	69577.exe
1940	jra.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\fxyt = "C:\\Users\\Admin\\jra.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

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

Processes:

jra.exe

description pid process target process

PID 1940 set thread context of 628 1940 jra.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

1756 EQNEDT32.EXE

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

description	pid	process	target process
PID 1940 set thread context of 628	1940	jra.exe	InstallUtil.exe

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

pid	process
1756	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
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
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
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\Se&nd to OneNote	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

804 WINWORD.EXE

pid	process
804	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

69577.exejra.exeInstallUtil.exe

pid	process
1072	69577.exe
1072	69577.exe
1072	69577.exe
1072	69577.exe
1072	69577.exe
1940	jra.exe
1940	jra.exe
628	InstallUtil.exe
628	InstallUtil.exe
628	InstallUtil.exe
628	InstallUtil.exe
628	InstallUtil.exe
628	InstallUtil.exe
628	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exejra.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1072 69577.exe
Token: SeDebugPrivilege 1940 jra.exe
Token: SeDebugPrivilege 628 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

804 WINWORD.EXE
804 WINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	1072	69577.exe
Token: SeDebugPrivilege	1940	jra.exe
Token: SeDebugPrivilege	628	InstallUtil.exe

pid	process
804	WINWORD.EXE
804	WINWORD.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.execmd.exejra.exe

description	pid	process	target process
PID 804 wrote to memory of 1172	804	WINWORD.EXE	splwow64.exe
PID 804 wrote to memory of 1172	804	WINWORD.EXE	splwow64.exe
PID 804 wrote to memory of 1172	804	WINWORD.EXE	splwow64.exe
PID 804 wrote to memory of 1172	804	WINWORD.EXE	splwow64.exe
PID 1756 wrote to memory of 1072	1756	EQNEDT32.EXE	69577.exe
PID 1756 wrote to memory of 1072	1756	EQNEDT32.EXE	69577.exe
PID 1756 wrote to memory of 1072	1756	EQNEDT32.EXE	69577.exe
PID 1756 wrote to memory of 1072	1756	EQNEDT32.EXE	69577.exe
PID 1072 wrote to memory of 576	1072	69577.exe	cmd.exe
PID 1072 wrote to memory of 576	1072	69577.exe	cmd.exe
PID 1072 wrote to memory of 576	1072	69577.exe	cmd.exe
PID 1072 wrote to memory of 576	1072	69577.exe	cmd.exe
PID 576 wrote to memory of 1304	576	cmd.exe	reg.exe
PID 576 wrote to memory of 1304	576	cmd.exe	reg.exe
PID 576 wrote to memory of 1304	576	cmd.exe	reg.exe
PID 576 wrote to memory of 1304	576	cmd.exe	reg.exe
PID 1072 wrote to memory of 1940	1072	69577.exe	jra.exe
PID 1072 wrote to memory of 1940	1072	69577.exe	jra.exe
PID 1072 wrote to memory of 1940	1072	69577.exe	jra.exe
PID 1072 wrote to memory of 1940	1072	69577.exe	jra.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.exe	InstallUtil.exe
PID 1940 wrote to memory of 628	1940	jra.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_78011.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:804

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1172

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:1756

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:1072

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "fxyt" /t REG_SZ /d "C:\Users\Admin\jra.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:576

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "fxyt" /t REG_SZ /d "C:\Users\Admin\jra.exe"
4⤵
- Adds Run key to start application
PID:1304

C:\Users\Admin\jra.exe
"C:\Users\Admin\jra.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940

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:628

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

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\U4LP0D2R.txt
MD5
64097c47bd07b1d1d6a440e87d7c3db8

SHA1
8f8bd7a343509d6974d7d082bd5cc95f887213e4

SHA256
cc86d756ac6a042ae1b331554a181de457e4831c218b90ba038eb204153ea59e

SHA512
959eace0030456d8673c6b33bcf524a6ca480f1de4bc27eab3a082d60f9798e317792979c532450fb780ee47138aca18656623880124bc50e82b97acc0414504

Download Submit
C:\Users\Admin\jra.exe
MD5
fb5363e0cae049792ad0705042daaaa4

SHA1
ecac4b6890de7ce53acdd794bf42cfb2019ad76e

SHA256
e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

SHA512
753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

Download Submit
C:\Users\Admin\jra.exe
MD5
fb5363e0cae049792ad0705042daaaa4

SHA1
ecac4b6890de7ce53acdd794bf42cfb2019ad76e

SHA256
e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

SHA512
753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

Download Submit
C:\Users\Public\69577.exe
MD5
fb5363e0cae049792ad0705042daaaa4

SHA1
ecac4b6890de7ce53acdd794bf42cfb2019ad76e

SHA256
e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

SHA512
753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

Download Submit
C:\Users\Public\69577.exe
MD5
fb5363e0cae049792ad0705042daaaa4

SHA1
ecac4b6890de7ce53acdd794bf42cfb2019ad76e

SHA256
e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

SHA512
753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\jra.exe
MD5
fb5363e0cae049792ad0705042daaaa4

SHA1
ecac4b6890de7ce53acdd794bf42cfb2019ad76e

SHA256
e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

SHA512
753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

Download Submit
\Users\Public\69577.exe
MD5
fb5363e0cae049792ad0705042daaaa4

SHA1
ecac4b6890de7ce53acdd794bf42cfb2019ad76e

SHA256
e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

SHA512
753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

Download Submit
memory/576-19-0x0000000000000000-mapping.dmp

Download
memory/628-38-0x00000000004638FE-mapping.dmp

Download
memory/628-37-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/628-40-0x000000006B8E0000-0x000000006BFCE000-memory.dmp

Filesize
6.9MB

Download
memory/628-41-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/628-43-0x0000000001070000-0x0000000001071000-memory.dmp

Filesize
4KB

Download
memory/804-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/804-3-0x00000000708A1000-0x00000000708A3000-memory.dmp

Filesize
8KB

Download
memory/804-2-0x0000000072E21000-0x0000000072E24000-memory.dmp

Filesize
12KB

Download
memory/1072-21-0x0000000004AB1000-0x0000000004AB2000-memory.dmp

Filesize
4KB

Download
memory/1072-13-0x000000006B8E0000-0x000000006BFCE000-memory.dmp

Filesize
6.9MB

Download
memory/1072-10-0x0000000000000000-mapping.dmp

Download
memory/1072-18-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/1072-14-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/1072-16-0x0000000000480000-0x000000000049E000-memory.dmp

Filesize
120KB

Download
memory/1072-17-0x0000000004AB0000-0x0000000004AB1000-memory.dmp

Filesize
4KB

Download
memory/1172-6-0x000007FEFC321000-0x000007FEFC323000-memory.dmp

Filesize
8KB

Download
memory/1172-5-0x0000000000000000-mapping.dmp

Download
memory/1304-20-0x0000000000000000-mapping.dmp

Download
memory/1516-8-0x000007FEF7C70000-0x000007FEF7EEA000-memory.dmp

Filesize
2.5MB

Download
memory/1756-7-0x0000000076C21000-0x0000000076C23000-memory.dmp

Filesize
8KB

Download
memory/1940-32-0x0000000000710000-0x000000000071B000-memory.dmp

Filesize
44KB

Download
memory/1940-33-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

Filesize
4KB

Download
memory/1940-31-0x0000000004B50000-0x0000000004B51000-memory.dmp

Filesize
4KB

Download
memory/1940-27-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

Filesize
4KB

Download
memory/1940-36-0x0000000004B51000-0x0000000004B52000-memory.dmp

Filesize
4KB

Download
memory/1940-26-0x000000006B8E0000-0x000000006BFCE000-memory.dmp

Filesize
6.9MB

Download
memory/1940-23-0x0000000000000000-mapping.dmp

Download