Analysis
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max time kernel
151s -
max time network
133s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
13-01-2021 07:04
Static task
static1
Behavioral task
behavioral1
Sample
PO-75013.scr
Resource
win7v20201028
Behavioral task
behavioral2
Sample
PO-75013.scr
Resource
win10v20201028
General
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Target
PO-75013.scr
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Size
1.6MB
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MD5
e7e6ee6ef97ff797562c91e0ff401ac4
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SHA1
d1ec737c87a9c0a91456f1019106b77ee2e03980
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SHA256
7eb2de2bfd05ee1e83980aa914486789d2e8f3fb3cc6e166f140302fdaf40cd9
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SHA512
1b84af0412dc0afbc19f894d2aec326f0f11c12dc9921ac817dab08415051f841b77aec5ed7bf5b53b0665e68b68ab53392ea731243a4630125fc158b3fd7743
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
explore.exeInstallUtil.exepid process 1988 explore.exe 1592 InstallUtil.exe -
Loads dropped DLL 2 IoCs
Processes:
PO-75013.screxplore.exepid process 2012 PO-75013.scr 1988 explore.exe -
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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription 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\explore = "C:\\Users\\Admin\\explore.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:
explore.exedescription pid process target process PID 1988 set thread context of 1592 1988 explore.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
PO-75013.screxplore.exeInstallUtil.exepid process 2012 PO-75013.scr 2012 PO-75013.scr 2012 PO-75013.scr 2012 PO-75013.scr 2012 PO-75013.scr 1988 explore.exe 1988 explore.exe 1592 InstallUtil.exe 1592 InstallUtil.exe 1592 InstallUtil.exe 1592 InstallUtil.exe 1592 InstallUtil.exe 1592 InstallUtil.exe 1592 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
PO-75013.screxplore.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 2012 PO-75013.scr Token: SeDebugPrivilege 1988 explore.exe Token: SeDebugPrivilege 1592 InstallUtil.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
PO-75013.scrcmd.exeexplore.exedescription pid process target process PID 2012 wrote to memory of 872 2012 PO-75013.scr cmd.exe PID 2012 wrote to memory of 872 2012 PO-75013.scr cmd.exe PID 2012 wrote to memory of 872 2012 PO-75013.scr cmd.exe PID 2012 wrote to memory of 872 2012 PO-75013.scr cmd.exe PID 872 wrote to memory of 1092 872 cmd.exe reg.exe PID 872 wrote to memory of 1092 872 cmd.exe reg.exe PID 872 wrote to memory of 1092 872 cmd.exe reg.exe PID 872 wrote to memory of 1092 872 cmd.exe reg.exe PID 2012 wrote to memory of 1988 2012 PO-75013.scr explore.exe PID 2012 wrote to memory of 1988 2012 PO-75013.scr explore.exe PID 2012 wrote to memory of 1988 2012 PO-75013.scr explore.exe PID 2012 wrote to memory of 1988 2012 PO-75013.scr explore.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe PID 1988 wrote to memory of 1592 1988 explore.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO-75013.scr"C:\Users\Admin\AppData\Local\Temp\PO-75013.scr" /S1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "explore" /t REG_SZ /d "C:\Users\Admin\explore.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:872 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "explore" /t REG_SZ /d "C:\Users\Admin\explore.exe"3⤵
- Adds Run key to start application
PID:1092 -
C:\Users\Admin\explore.exe"C:\Users\Admin\explore.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988 -
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:1592
Network
MITRE ATT&CK Enterprise 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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C:\Users\Admin\explore.exeMD5
e7e6ee6ef97ff797562c91e0ff401ac4
SHA1d1ec737c87a9c0a91456f1019106b77ee2e03980
SHA2567eb2de2bfd05ee1e83980aa914486789d2e8f3fb3cc6e166f140302fdaf40cd9
SHA5121b84af0412dc0afbc19f894d2aec326f0f11c12dc9921ac817dab08415051f841b77aec5ed7bf5b53b0665e68b68ab53392ea731243a4630125fc158b3fd7743
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C:\Users\Admin\explore.exeMD5
e7e6ee6ef97ff797562c91e0ff401ac4
SHA1d1ec737c87a9c0a91456f1019106b77ee2e03980
SHA2567eb2de2bfd05ee1e83980aa914486789d2e8f3fb3cc6e166f140302fdaf40cd9
SHA5121b84af0412dc0afbc19f894d2aec326f0f11c12dc9921ac817dab08415051f841b77aec5ed7bf5b53b0665e68b68ab53392ea731243a4630125fc158b3fd7743
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\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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\Users\Admin\explore.exeMD5
e7e6ee6ef97ff797562c91e0ff401ac4
SHA1d1ec737c87a9c0a91456f1019106b77ee2e03980
SHA2567eb2de2bfd05ee1e83980aa914486789d2e8f3fb3cc6e166f140302fdaf40cd9
SHA5121b84af0412dc0afbc19f894d2aec326f0f11c12dc9921ac817dab08415051f841b77aec5ed7bf5b53b0665e68b68ab53392ea731243a4630125fc158b3fd7743
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memory/872-7-0x0000000000000000-mapping.dmp
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memory/1092-8-0x0000000000000000-mapping.dmp
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memory/1592-22-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/1592-27-0x0000000074BA0000-0x000000007528E000-memory.dmpFilesize
6.9MB
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memory/1592-26-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/1592-25-0x0000000000400000-0x0000000000468000-memory.dmpFilesize
416KB
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memory/1592-23-0x000000000046362E-mapping.dmp
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memory/1988-14-0x0000000000060000-0x0000000000061000-memory.dmpFilesize
4KB
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memory/1988-19-0x0000000002170000-0x0000000002171000-memory.dmpFilesize
4KB
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memory/1988-18-0x0000000000810000-0x000000000081B000-memory.dmpFilesize
44KB
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memory/1988-10-0x0000000000000000-mapping.dmp
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memory/1988-13-0x0000000074BA0000-0x000000007528E000-memory.dmpFilesize
6.9MB
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memory/2012-6-0x00000000005B0000-0x00000000005B1000-memory.dmpFilesize
4KB
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memory/2012-5-0x0000000000590000-0x00000000005AE000-memory.dmpFilesize
120KB
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memory/2012-3-0x0000000000350000-0x0000000000351000-memory.dmpFilesize
4KB
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memory/2012-2-0x0000000074BA0000-0x000000007528E000-memory.dmpFilesize
6.9MB