snakekeylogger | c18a8f9b247d1af804f7deb0e94fd9e853f760e27bdab7b39aceb17b12e90954

Resubmissions

19-01-2021 16:35

210119-f4jb7cdzrs 10

Analysis

max time kernel
70s
max time network
135s
platform
windows7_x64
resource
win7v20201028
submitted
19-01-2021 16:35

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General

Target

IMG_0661.doc
Size

720KB
MD5

1cc97f80c8e2b8c63dcced418802f05d
SHA1

ea7a55042caf762d2ef656a4395b6abe09f57644
SHA256

c18a8f9b247d1af804f7deb0e94fd9e853f760e27bdab7b39aceb17b12e90954
SHA512

dd4a8a478704fb433e0c27972ceb1e128885994058a313eb0a5b5687b7b948a97261f1d237dc455ab1575b5808dc82eb5b50c2219f9fe3a6f3d80f841ee45d6f

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/1372-37-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/1372-38-0x000000000046373E-mapping.dmp	family_snakekeylogger
behavioral1/memory/1372-41-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1680 EQNEDT32.EXE
8 1680 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

69577.exempog.exeInstallUtil.exe

pid process

308 69577.exe
1336 mpog.exe
1372 InstallUtil.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE69577.exempog.exe

pid process

1680 EQNEDT32.EXE
308 69577.exe
1336 mpog.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	1680	EQNEDT32.EXE
8	1680	EQNEDT32.EXE

pid	process
1680	EQNEDT32.EXE
308	69577.exe
1336	mpog.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\snwy = "C:\\Users\\Admin\\mpog.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

9 checkip.dyndns.org
12 freegeoip.app
13 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

mpog.exe

description pid process target process

PID 1336 set thread context of 1372 1336 mpog.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

1680 EQNEDT32.EXE

flow	ioc
9	checkip.dyndns.org
12	freegeoip.app
13	freegeoip.app

description	pid	process	target process
PID 1336 set thread context of 1372	1336	mpog.exe	InstallUtil.exe

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

pid	process
1680	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
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\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
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\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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

544 WINWORD.EXE

pid	process
544	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

69577.exempog.exeInstallUtil.exe

pid	process
308	69577.exe
308	69577.exe
308	69577.exe
308	69577.exe
308	69577.exe
1336	mpog.exe
1336	mpog.exe
1372	InstallUtil.exe
1372	InstallUtil.exe
1372	InstallUtil.exe
1372	InstallUtil.exe
1372	InstallUtil.exe
1372	InstallUtil.exe
1372	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exempog.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 308 69577.exe
Token: SeDebugPrivilege 1336 mpog.exe
Token: SeDebugPrivilege 1372 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

544 WINWORD.EXE
544 WINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	308	69577.exe
Token: SeDebugPrivilege	1336	mpog.exe
Token: SeDebugPrivilege	1372	InstallUtil.exe

pid	process
544	WINWORD.EXE
544	WINWORD.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.execmd.exempog.exe

description	pid	process	target process
PID 544 wrote to memory of 1972	544	WINWORD.EXE	splwow64.exe
PID 544 wrote to memory of 1972	544	WINWORD.EXE	splwow64.exe
PID 544 wrote to memory of 1972	544	WINWORD.EXE	splwow64.exe
PID 544 wrote to memory of 1972	544	WINWORD.EXE	splwow64.exe
PID 1680 wrote to memory of 308	1680	EQNEDT32.EXE	69577.exe
PID 1680 wrote to memory of 308	1680	EQNEDT32.EXE	69577.exe
PID 1680 wrote to memory of 308	1680	EQNEDT32.EXE	69577.exe
PID 1680 wrote to memory of 308	1680	EQNEDT32.EXE	69577.exe
PID 308 wrote to memory of 1688	308	69577.exe	cmd.exe
PID 308 wrote to memory of 1688	308	69577.exe	cmd.exe
PID 308 wrote to memory of 1688	308	69577.exe	cmd.exe
PID 308 wrote to memory of 1688	308	69577.exe	cmd.exe
PID 1688 wrote to memory of 1372	1688	cmd.exe	reg.exe
PID 1688 wrote to memory of 1372	1688	cmd.exe	reg.exe
PID 1688 wrote to memory of 1372	1688	cmd.exe	reg.exe
PID 1688 wrote to memory of 1372	1688	cmd.exe	reg.exe
PID 308 wrote to memory of 1336	308	69577.exe	mpog.exe
PID 308 wrote to memory of 1336	308	69577.exe	mpog.exe
PID 308 wrote to memory of 1336	308	69577.exe	mpog.exe
PID 308 wrote to memory of 1336	308	69577.exe	mpog.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.exe	InstallUtil.exe
PID 1336 wrote to memory of 1372	1336	mpog.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_0661.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:544

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1972

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:1680

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:308

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "snwy" /t REG_SZ /d "C:\Users\Admin\mpog.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "snwy" /t REG_SZ /d "C:\Users\Admin\mpog.exe"
4⤵
- Adds Run key to start application
PID:1372

C:\Users\Admin\mpog.exe
"C:\Users\Admin\mpog.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336

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:1372

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\BEAPTR3E.txt
MD5
1ffa0cf9aff984ca211dcded1918cff8

SHA1
08d263d037c703112a540e3ba807ceb6943d5bbc

SHA256
a172deec056106c6ca3f8821d2118f3f4f7a865d722e9534d3723d2c946e18b1

SHA512
8a17fca6e5fbe79e495f98e066ee03ecbde4581e25430ac7a5f06bfed7bd39fb163b7ba00803f7ce2bd7f3b4d2f59c43021d8e4488553d8547bfb9ec0a59541c

Download Submit
C:\Users\Admin\mpog.exe
MD5
ab565e8240a1f6b736c4ddbaf1b4c367

SHA1
c2c9e564cf368505dd7ae451d290ebb435f0389e

SHA256
a5ae22128aff34bd1d5ed68591a887bbe3d53e9f170b253593ce27c9e6854687

SHA512
d0d2060fa61e6138019435340bc6ece35973e8aba7102e86b120f67f8673f5db08b16f81cfc66673799df92a5bf6e217b800de08066f7614dbbd3d579b15db98

Download Submit
C:\Users\Admin\mpog.exe
MD5
ab565e8240a1f6b736c4ddbaf1b4c367

SHA1
c2c9e564cf368505dd7ae451d290ebb435f0389e

SHA256
a5ae22128aff34bd1d5ed68591a887bbe3d53e9f170b253593ce27c9e6854687

SHA512
d0d2060fa61e6138019435340bc6ece35973e8aba7102e86b120f67f8673f5db08b16f81cfc66673799df92a5bf6e217b800de08066f7614dbbd3d579b15db98

Download Submit
C:\Users\Public\69577.exe
MD5
ab565e8240a1f6b736c4ddbaf1b4c367

SHA1
c2c9e564cf368505dd7ae451d290ebb435f0389e

SHA256
a5ae22128aff34bd1d5ed68591a887bbe3d53e9f170b253593ce27c9e6854687

SHA512
d0d2060fa61e6138019435340bc6ece35973e8aba7102e86b120f67f8673f5db08b16f81cfc66673799df92a5bf6e217b800de08066f7614dbbd3d579b15db98

Download Submit
C:\Users\Public\69577.exe
MD5
ab565e8240a1f6b736c4ddbaf1b4c367

SHA1
c2c9e564cf368505dd7ae451d290ebb435f0389e

SHA256
a5ae22128aff34bd1d5ed68591a887bbe3d53e9f170b253593ce27c9e6854687

SHA512
d0d2060fa61e6138019435340bc6ece35973e8aba7102e86b120f67f8673f5db08b16f81cfc66673799df92a5bf6e217b800de08066f7614dbbd3d579b15db98

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\mpog.exe
MD5
ab565e8240a1f6b736c4ddbaf1b4c367

SHA1
c2c9e564cf368505dd7ae451d290ebb435f0389e

SHA256
a5ae22128aff34bd1d5ed68591a887bbe3d53e9f170b253593ce27c9e6854687

SHA512
d0d2060fa61e6138019435340bc6ece35973e8aba7102e86b120f67f8673f5db08b16f81cfc66673799df92a5bf6e217b800de08066f7614dbbd3d579b15db98

Download Submit
\Users\Public\69577.exe
MD5
ab565e8240a1f6b736c4ddbaf1b4c367

SHA1
c2c9e564cf368505dd7ae451d290ebb435f0389e

SHA256
a5ae22128aff34bd1d5ed68591a887bbe3d53e9f170b253593ce27c9e6854687

SHA512
d0d2060fa61e6138019435340bc6ece35973e8aba7102e86b120f67f8673f5db08b16f81cfc66673799df92a5bf6e217b800de08066f7614dbbd3d579b15db98

Download Submit
memory/308-21-0x0000000004941000-0x0000000004942000-memory.dmp

Filesize
4KB

Download
memory/308-10-0x0000000000000000-mapping.dmp

Download
memory/308-14-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/308-16-0x00000000007E0000-0x00000000007FE000-memory.dmp

Filesize
120KB

Download
memory/308-17-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/308-18-0x0000000004940000-0x0000000004941000-memory.dmp

Filesize
4KB

Download
memory/308-13-0x000000006B5C0000-0x000000006BCAE000-memory.dmp

Filesize
6.9MB

Download
memory/544-3-0x0000000070691000-0x0000000070693000-memory.dmp

Filesize
8KB

Download
memory/544-2-0x0000000072C11000-0x0000000072C14000-memory.dmp

Filesize
12KB

Download
memory/544-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1300-8-0x000007FEF7EB0000-0x000007FEF812A000-memory.dmp

Filesize
2.5MB

Download
memory/1336-36-0x0000000004A31000-0x0000000004A32000-memory.dmp

Filesize
4KB

Download
memory/1336-23-0x0000000000000000-mapping.dmp

Download
memory/1336-26-0x000000006B5C0000-0x000000006BCAE000-memory.dmp

Filesize
6.9MB

Download
memory/1336-27-0x00000000011C0000-0x00000000011C1000-memory.dmp

Filesize
4KB

Download
memory/1336-31-0x0000000004A30000-0x0000000004A31000-memory.dmp

Filesize
4KB

Download
memory/1336-32-0x0000000000550000-0x000000000055B000-memory.dmp

Filesize
44KB

Download
memory/1336-33-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/1372-20-0x0000000000000000-mapping.dmp

Download
memory/1372-37-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1372-38-0x000000000046373E-mapping.dmp

Download
memory/1372-40-0x000000006B5C0000-0x000000006BCAE000-memory.dmp

Filesize
6.9MB

Download
memory/1372-41-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1372-43-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1680-7-0x0000000076881000-0x0000000076883000-memory.dmp

Filesize
8KB

Download
memory/1688-19-0x0000000000000000-mapping.dmp

Download
memory/1972-5-0x0000000000000000-mapping.dmp

Download
memory/1972-6-0x000007FEFC2B1000-0x000007FEFC2B3000-memory.dmp

Filesize
8KB

Download