Analysis Overview
SHA256
dcd849401b6834b4c36006567cbf2e9bcc2093849432a104ff43d178867d397d
Threat Level: Known bad
The file pdf.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Loads dropped DLL
Checks computer location settings
Checks QEMU agent file
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Suspicious use of SetThreadContext
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-07-12 10:04
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-12 10:04
Reported
2023-07-12 10:10
Platform
win7-20230703-en
Max time kernel
297s
Max time network
196s
Command Line
Signatures
Guloader,Cloudeye
Checks QEMU agent file
| Description | Indicator | Process | Target |
| File opened (read-only) | C:\Program Files\Qemu-ga\qemu-ga.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
| File opened (read-only) | C:\Program Files\Qemu-ga\qemu-ga.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1305762978-1813183296-1799492538-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Mdelokalernes72\Oscillators\Burghbote\Orwellian.Pro | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1496 set thread context of 2268 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
| PID 2268 set thread context of 1496 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\Bismark\Salaamed\Bundgarnsfiskernes\appelret.ini | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\pdf.exe
"C:\Users\Admin\AppData\Local\Temp\pdf.exe"
C:\Users\Admin\AppData\Local\Temp\pdf.exe
"C:\Users\Admin\AppData\Local\Temp\pdf.exe"
C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | drive.google.com | udp |
| NL | 172.217.168.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | doc-04-0k-docs.googleusercontent.com | udp |
| NL | 142.251.36.1:443 | doc-04-0k-docs.googleusercontent.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nst3B7C.tmp\System.dll
| MD5 | 17ed1c86bd67e78ade4712be48a7d2bd |
| SHA1 | 1cc9fe86d6d6030b4dae45ecddce5907991c01a0 |
| SHA256 | bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb |
| SHA512 | 0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5 |
memory/1496-63-0x0000000002760000-0x0000000003E6D000-memory.dmp
memory/1496-64-0x0000000002760000-0x0000000003E6D000-memory.dmp
memory/2268-65-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2268-66-0x0000000001470000-0x0000000002B7D000-memory.dmp
memory/2268-67-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2268-88-0x0000000000400000-0x0000000001462000-memory.dmp
memory/2268-89-0x0000000001470000-0x0000000002B7D000-memory.dmp
memory/1496-91-0x0000000003F70000-0x0000000004040000-memory.dmp
memory/2268-92-0x0000000001470000-0x0000000002B7D000-memory.dmp
memory/2268-93-0x0000000033050000-0x0000000033353000-memory.dmp
memory/2268-94-0x0000000000400000-0x0000000001462000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-07-12 10:04
Reported
2023-07-12 10:10
Platform
win10v2004-20230703-en
Max time kernel
297s
Max time network
294s
Command Line
Signatures
Guloader,Cloudeye
Checks QEMU agent file
| Description | Indicator | Process | Target |
| File opened (read-only) | C:\Program Files\Qemu-ga\qemu-ga.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
| File opened (read-only) | C:\Program Files\Qemu-ga\qemu-ga.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Mdelokalernes72\Oscillators\Burghbote\Orwellian.Pro | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4220 set thread context of 3220 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Common Files\Bismark\Salaamed\Bundgarnsfiskernes\appelret.ini | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4220 wrote to memory of 3220 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
| PID 4220 wrote to memory of 3220 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
| PID 4220 wrote to memory of 3220 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
| PID 4220 wrote to memory of 3220 | N/A | C:\Users\Admin\AppData\Local\Temp\pdf.exe | C:\Users\Admin\AppData\Local\Temp\pdf.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\pdf.exe
"C:\Users\Admin\AppData\Local\Temp\pdf.exe"
C:\Users\Admin\AppData\Local\Temp\pdf.exe
"C:\Users\Admin\AppData\Local\Temp\pdf.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 112.208.253.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.19.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.google.com | udp |
| NL | 172.217.168.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | 238.168.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | doc-04-0k-docs.googleusercontent.com | udp |
| NL | 142.251.36.1:443 | doc-04-0k-docs.googleusercontent.com | tcp |
| US | 8.8.8.8:53 | 1.36.251.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.13.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.121.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.143.182.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nswCA17.tmp\System.dll
| MD5 | 17ed1c86bd67e78ade4712be48a7d2bd |
| SHA1 | 1cc9fe86d6d6030b4dae45ecddce5907991c01a0 |
| SHA256 | bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb |
| SHA512 | 0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5 |
memory/4220-141-0x0000000002AD0000-0x00000000041DD000-memory.dmp
memory/4220-142-0x0000000002AD0000-0x00000000041DD000-memory.dmp
memory/3220-143-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3220-144-0x0000000001660000-0x0000000002D6D000-memory.dmp
memory/3220-157-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3220-158-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3220-159-0x0000000001660000-0x0000000002D6D000-memory.dmp
memory/3220-160-0x0000000001660000-0x0000000002D6D000-memory.dmp
memory/3220-161-0x00000000332A0000-0x00000000335EA000-memory.dmp
memory/3220-162-0x0000000000400000-0x0000000001654000-memory.dmp