Analysis
-
max time kernel
150s -
max time network
143s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
18-01-2021 07:54
Static task
static1
Behavioral task
behavioral1
Sample
IMG_71103.pdf.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
IMG_71103.pdf.exe
Resource
win10v20201028
General
-
Target
IMG_71103.pdf.exe
-
Size
1.5MB
-
MD5
96677fa4409a98a04a9c87737eb1f167
-
SHA1
0a21c71633a30db91f5b6572ca8e283ed3229109
-
SHA256
bd0d59702d2d99ee59e5d10834c234e2fa98bfb4d02b19500f3a67bbff70e7d5
-
SHA512
548b9b3f207cfce453221d08bc11d247aeae376d7ee8d68c7cdf38d4762f52d4a62d56fc6682df6b007cd11be93c2281ea48ed498704257da1e4da519ccef4ca
Malware Config
Signatures
-
Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
-
Snake Keylogger Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/740-27-0x000000000046372E-mapping.dmp family_snakekeylogger behavioral1/memory/740-29-0x0000000000090000-0x00000000000F8000-memory.dmp family_snakekeylogger -
Executes dropped EXE 2 IoCs
Processes:
scis.exeInstallUtil.exepid process 1504 scis.exe 740 InstallUtil.exe -
Loads dropped DLL 2 IoCs
Processes:
IMG_71103.pdf.exescis.exepid process 1684 IMG_71103.pdf.exe 1504 scis.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
-
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\not = "C:\\Users\\Admin\\scis.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 6 checkip.dyndns.org 11 freegeoip.app 12 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
scis.exedescription pid process target process PID 1504 set thread context of 740 1504 scis.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
IMG_71103.pdf.exescis.exeInstallUtil.exepid process 1684 IMG_71103.pdf.exe 1684 IMG_71103.pdf.exe 1684 IMG_71103.pdf.exe 1684 IMG_71103.pdf.exe 1684 IMG_71103.pdf.exe 1504 scis.exe 1504 scis.exe 740 InstallUtil.exe 740 InstallUtil.exe 740 InstallUtil.exe 740 InstallUtil.exe 740 InstallUtil.exe 740 InstallUtil.exe 740 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
IMG_71103.pdf.exescis.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1684 IMG_71103.pdf.exe Token: SeDebugPrivilege 1504 scis.exe Token: SeDebugPrivilege 740 InstallUtil.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
IMG_71103.pdf.execmd.exescis.exedescription pid process target process PID 1684 wrote to memory of 1236 1684 IMG_71103.pdf.exe cmd.exe PID 1684 wrote to memory of 1236 1684 IMG_71103.pdf.exe cmd.exe PID 1684 wrote to memory of 1236 1684 IMG_71103.pdf.exe cmd.exe PID 1684 wrote to memory of 1236 1684 IMG_71103.pdf.exe cmd.exe PID 1236 wrote to memory of 1396 1236 cmd.exe reg.exe PID 1236 wrote to memory of 1396 1236 cmd.exe reg.exe PID 1236 wrote to memory of 1396 1236 cmd.exe reg.exe PID 1236 wrote to memory of 1396 1236 cmd.exe reg.exe PID 1684 wrote to memory of 1504 1684 IMG_71103.pdf.exe scis.exe PID 1684 wrote to memory of 1504 1684 IMG_71103.pdf.exe scis.exe PID 1684 wrote to memory of 1504 1684 IMG_71103.pdf.exe scis.exe PID 1684 wrote to memory of 1504 1684 IMG_71103.pdf.exe scis.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe PID 1504 wrote to memory of 740 1504 scis.exe InstallUtil.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\IMG_71103.pdf.exe"C:\Users\Admin\AppData\Local\Temp\IMG_71103.pdf.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "not" /t REG_SZ /d "C:\Users\Admin\scis.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:1236 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "not" /t REG_SZ /d "C:\Users\Admin\scis.exe"3⤵
- Adds Run key to start application
PID:1396 -
C:\Users\Admin\scis.exe"C:\Users\Admin\scis.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1504 -
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:740
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
-
C:\Users\Admin\scis.exeMD5
96677fa4409a98a04a9c87737eb1f167
SHA10a21c71633a30db91f5b6572ca8e283ed3229109
SHA256bd0d59702d2d99ee59e5d10834c234e2fa98bfb4d02b19500f3a67bbff70e7d5
SHA512548b9b3f207cfce453221d08bc11d247aeae376d7ee8d68c7cdf38d4762f52d4a62d56fc6682df6b007cd11be93c2281ea48ed498704257da1e4da519ccef4ca
-
C:\Users\Admin\scis.exeMD5
96677fa4409a98a04a9c87737eb1f167
SHA10a21c71633a30db91f5b6572ca8e283ed3229109
SHA256bd0d59702d2d99ee59e5d10834c234e2fa98bfb4d02b19500f3a67bbff70e7d5
SHA512548b9b3f207cfce453221d08bc11d247aeae376d7ee8d68c7cdf38d4762f52d4a62d56fc6682df6b007cd11be93c2281ea48ed498704257da1e4da519ccef4ca
-
\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
-
\Users\Admin\scis.exeMD5
96677fa4409a98a04a9c87737eb1f167
SHA10a21c71633a30db91f5b6572ca8e283ed3229109
SHA256bd0d59702d2d99ee59e5d10834c234e2fa98bfb4d02b19500f3a67bbff70e7d5
SHA512548b9b3f207cfce453221d08bc11d247aeae376d7ee8d68c7cdf38d4762f52d4a62d56fc6682df6b007cd11be93c2281ea48ed498704257da1e4da519ccef4ca
-
memory/740-33-0x0000000000890000-0x0000000000891000-memory.dmpFilesize
4KB
-
memory/740-31-0x0000000000090000-0x0000000000092000-memory.dmpFilesize
8KB
-
memory/740-30-0x0000000074450000-0x0000000074B3E000-memory.dmpFilesize
6.9MB
-
memory/740-29-0x0000000000090000-0x00000000000F8000-memory.dmpFilesize
416KB
-
memory/740-27-0x000000000046372E-mapping.dmp
-
memory/1236-8-0x0000000000000000-mapping.dmp
-
memory/1396-9-0x0000000000000000-mapping.dmp
-
memory/1504-25-0x0000000004B51000-0x0000000004B52000-memory.dmpFilesize
4KB
-
memory/1504-20-0x0000000004B50000-0x0000000004B51000-memory.dmpFilesize
4KB
-
memory/1504-21-0x0000000000820000-0x000000000082B000-memory.dmpFilesize
44KB
-
memory/1504-22-0x0000000000940000-0x0000000000941000-memory.dmpFilesize
4KB
-
memory/1504-15-0x0000000074450000-0x0000000074B3E000-memory.dmpFilesize
6.9MB
-
memory/1504-12-0x0000000000000000-mapping.dmp
-
memory/1504-16-0x0000000000260000-0x0000000000261000-memory.dmpFilesize
4KB
-
memory/1684-10-0x0000000004BE1000-0x0000000004BE2000-memory.dmpFilesize
4KB
-
memory/1684-2-0x0000000074450000-0x0000000074B3E000-memory.dmpFilesize
6.9MB
-
memory/1684-7-0x0000000004BE0000-0x0000000004BE1000-memory.dmpFilesize
4KB
-
memory/1684-6-0x0000000000610000-0x0000000000611000-memory.dmpFilesize
4KB
-
memory/1684-5-0x00000000005F0000-0x000000000060E000-memory.dmpFilesize
120KB
-
memory/1684-3-0x0000000001210000-0x0000000001211000-memory.dmpFilesize
4KB