Analysis Overview
SHA256
9e45db06cc8ee275f4fd1855b7c8c57f4b2fc85d8f58512076cce9189230c475
Threat Level: Known bad
The file Borgerreprsentants.exe was found to be: Known bad.
Malicious Activity Summary
Guloader,Cloudeye
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Suspicious use of SetThreadContext
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Program Files directory
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Program crash
NSIS installer
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-21 12:55
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
NSIS installer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-21 12:55
Reported
2024-05-21 12:57
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | drive.google.com | N/A | N/A |
| N/A | drive.google.com | N/A | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3572 set thread context of 4216 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\konvoluterer\Forsikringsinspektrer.ini | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\mycelian\sempitern.ini | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3572 wrote to memory of 4216 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 3572 wrote to memory of 4216 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 3572 wrote to memory of 4216 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 3572 wrote to memory of 4216 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 3572 wrote to memory of 4216 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe
"C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe"
C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe
"C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| NL | 23.62.61.99:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 99.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.187.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | 238.187.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 142.250.179.225:443 | drive.usercontent.google.com | tcp |
| US | 8.8.8.8:53 | 225.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.143.109.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.179.89.13.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\nsj4393.tmp\System.dll
| MD5 | b8992e497d57001ddf100f9c397fcef5 |
| SHA1 | e26ddf101a2ec5027975d2909306457c6f61cfbd |
| SHA256 | 98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b |
| SHA512 | 8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c |
memory/3572-32-0x0000000004A10000-0x00000000063D8000-memory.dmp
memory/3572-33-0x00000000770F1000-0x0000000077211000-memory.dmp
memory/3572-34-0x0000000010004000-0x0000000010005000-memory.dmp
memory/4216-35-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4216-36-0x0000000001660000-0x0000000003028000-memory.dmp
memory/3572-37-0x0000000004A10000-0x00000000063D8000-memory.dmp
memory/4216-38-0x0000000077178000-0x0000000077179000-memory.dmp
memory/4216-40-0x0000000077195000-0x0000000077196000-memory.dmp
memory/4216-39-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4216-53-0x0000000001660000-0x0000000003028000-memory.dmp
memory/4216-55-0x00000000770F1000-0x0000000077211000-memory.dmp
memory/3572-60-0x0000000004A10000-0x00000000063D8000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-05-21 12:55
Reported
2024-05-21 12:57
Platform
win7-20240508-en
Max time kernel
122s
Max time network
122s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 224
Network
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-05-21 12:55
Reported
2024-05-21 12:57
Platform
win10v2004-20240426-en
Max time kernel
129s
Max time network
98s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2428 wrote to memory of 3020 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2428 wrote to memory of 3020 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2428 wrote to memory of 3020 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3020 -ip 3020
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 612
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.181.190.20.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-21 12:55
Reported
2024-05-21 12:57
Platform
win7-20240508-en
Max time kernel
146s
Max time network
147s
Command Line
Signatures
Guloader,Cloudeye
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | drive.google.com | N/A | N/A |
| N/A | drive.google.com | N/A | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1544 set thread context of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\konvoluterer\Forsikringsinspektrer.ini | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\mycelian\sempitern.ini | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1544 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 1544 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 1544 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 1544 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 1544 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
| PID 1544 wrote to memory of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe | C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe
"C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe"
C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe
"C:\Users\Admin\AppData\Local\Temp\Borgerreprsentants.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | drive.google.com | udp |
| GB | 142.250.187.238:443 | drive.google.com | tcp |
| US | 8.8.8.8:53 | drive.usercontent.google.com | udp |
| GB | 142.250.179.225:443 | drive.usercontent.google.com | tcp |
Files
\Users\Admin\AppData\Local\Temp\nst2973.tmp\System.dll
| MD5 | b8992e497d57001ddf100f9c397fcef5 |
| SHA1 | e26ddf101a2ec5027975d2909306457c6f61cfbd |
| SHA256 | 98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b |
| SHA512 | 8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c |
memory/1544-33-0x0000000003640000-0x0000000005008000-memory.dmp
memory/1544-34-0x0000000077591000-0x0000000077692000-memory.dmp
memory/1544-35-0x0000000077590000-0x0000000077739000-memory.dmp
memory/2312-37-0x0000000077590000-0x0000000077739000-memory.dmp
memory/2312-36-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1544-38-0x0000000003640000-0x0000000005008000-memory.dmp
memory/2312-39-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1544-73-0x0000000003640000-0x0000000005008000-memory.dmp