Analysis
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max time kernel
29s -
max time network
130s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
19-01-2021 16:21
Static task
static1
Behavioral task
behavioral1
Sample
IMG_80137.pdf.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
IMG_80137.pdf.exe
Resource
win10v20201028
General
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Target
IMG_80137.pdf.exe
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Size
1.6MB
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MD5
581632a12c1a592209d0601ed1636e81
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SHA1
97edd171131eb1a3ae9e63aa18b7596bf7ab9d44
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SHA256
bc5587fc7b0ae1762cf3a8d5437608ccb908c8eaaeb219f1abb7ee4cad57d1ba
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SHA512
d768bcc9feb675f9defb63be246b21b685add5bfe57d2c9dc13da265ec0fa268cf6a84b07aa8745b57fdf3b0a73b8aad00f221776ed8ebd5e853a7b736cf8230
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1496-12-0x0000000000400000-0x0000000000468000-memory.dmp family_snakekeylogger behavioral1/memory/1496-13-0x00000000004638FE-mapping.dmp family_snakekeylogger behavioral1/memory/1496-17-0x0000000000400000-0x0000000000468000-memory.dmp family_snakekeylogger -
Executes dropped EXE 1 IoCs
Processes:
InstallUtil.exepid process 1496 InstallUtil.exe -
Loads dropped DLL 1 IoCs
Processes:
IMG_80137.pdf.exepid process 1064 IMG_80137.pdf.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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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 5 checkip.dyndns.org 10 freegeoip.app 11 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
IMG_80137.pdf.exedescription pid process target process PID 1064 set thread context of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
IMG_80137.pdf.exeInstallUtil.exepid process 1064 IMG_80137.pdf.exe 1064 IMG_80137.pdf.exe 1496 InstallUtil.exe 1496 InstallUtil.exe 1496 InstallUtil.exe 1496 InstallUtil.exe 1496 InstallUtil.exe 1496 InstallUtil.exe 1496 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
IMG_80137.pdf.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1064 IMG_80137.pdf.exe Token: SeDebugPrivilege 1496 InstallUtil.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
IMG_80137.pdf.exedescription pid process target process PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe PID 1064 wrote to memory of 1496 1064 IMG_80137.pdf.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\IMG_80137.pdf.exe"C:\Users\Admin\AppData\Local\Temp\IMG_80137.pdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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memory/1064-7-0x00000000021A0000-0x00000000021A1000-memory.dmpFilesize
4KB
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memory/1064-2-0x00000000740B0000-0x000000007479E000-memory.dmpFilesize
6.9MB
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memory/1064-8-0x0000000000610000-0x000000000061B000-memory.dmpFilesize
44KB
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memory/1064-9-0x00000000008C0000-0x00000000008C1000-memory.dmpFilesize
4KB
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memory/1064-6-0x00000000005B0000-0x00000000005B1000-memory.dmpFilesize
4KB
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memory/1064-11-0x00000000021A1000-0x00000000021A2000-memory.dmpFilesize
4KB
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memory/1064-5-0x00000000003E0000-0x00000000003FE000-memory.dmpFilesize
120KB
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memory/1064-3-0x0000000000170000-0x0000000000171000-memory.dmpFilesize
4KB
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memory/1496-12-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/1496-13-0x00000000004638FE-mapping.dmp
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memory/1496-16-0x00000000740B0000-0x000000007479E000-memory.dmpFilesize
6.9MB
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memory/1496-17-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/1496-19-0x0000000004730000-0x0000000004731000-memory.dmpFilesize
4KB