Analysis Overview
SHA256
50abd0bacda330273a8fbdeef6b0d1dccf84dfa87f8a403e551f4666ab0a6d55
Threat Level: Known bad
The file a17e68df0571d9c5eb1d50128f988fd2 was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Loads dropped DLL
Uses the VBS compiler for execution
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
NSIS installer
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-24 09:17
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-24 09:17
Reported
2024-02-24 09:20
Platform
win7-20240221-en
Max time kernel
149s
Max time network
154s
Command Line
Signatures
Darkcomet
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindosU = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WindosU.exe" | C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2068 set thread context of 2120 | N/A | C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Enumerates physical storage devices
NSIS installer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe
"C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe
"C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
Files
memory/2068-0-0x00000000745D0000-0x0000000074B7B000-memory.dmp
memory/2068-1-0x00000000745D0000-0x0000000074B7B000-memory.dmp
memory/2068-2-0x0000000000310000-0x0000000000350000-memory.dmp
memory/2120-3-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-5-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-7-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-9-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-10-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-11-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-12-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2120-15-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-8-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-16-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-17-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-18-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-20-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2120-21-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-22-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-23-0x0000000000400000-0x00000000004AF000-memory.dmp
\Users\Admin\AppData\Local\Temp\rarebot-installer.exe
| MD5 | b6838889d5af2a20c4786f93aa007ee0 |
| SHA1 | 655c6869c824676aa3c44c783daced735798f9da |
| SHA256 | 99f686c9c12c8ad5367998e4d3d850171c31b43901f1ac22d7744aa7cfadb231 |
| SHA512 | 1222a035f9c38b6bfb487e262e7e6b23486a3090096e75fc03640cc1a1af8c02df9c1f380d8de5a6e3f0839d091468e27193df0a7e29282c3e5286aad84511a1 |
\Users\Admin\AppData\Local\Temp\nsy591A.tmp\FindProcDLL.dll
| MD5 | 8614c450637267afacad1645e23ba24a |
| SHA1 | e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2 |
| SHA256 | 0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758 |
| SHA512 | af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b |
memory/2068-39-0x00000000745D0000-0x0000000074B7B000-memory.dmp
memory/2380-36-0x0000000010000000-0x0000000010003000-memory.dmp
\Users\Admin\AppData\Local\Temp\nsy591A.tmp\nsDialogs.dll
| MD5 | c10e04dd4ad4277d5adc951bb331c777 |
| SHA1 | b1e30808198a3ae6d6d1cca62df8893dc2a7ad43 |
| SHA256 | e31ad6c6e82e603378cb6b80e67d0e0dcd9cf384e1199ac5a65cb4935680021a |
| SHA512 | 853a5564bf751d40484ea482444c6958457cb4a17fb973cf870f03f201b8b2643be41bccde00f6b2026dc0c3d113e6481b0dc4c7b0f3ae7966d38c92c6b5862e |
\Users\Admin\AppData\Local\Temp\nsy591A.tmp\System.dll
| MD5 | c17103ae9072a06da581dec998343fc1 |
| SHA1 | b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d |
| SHA256 | dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f |
| SHA512 | d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f |
memory/2120-54-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-55-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-56-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-57-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-58-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-59-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-60-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-61-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-62-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-63-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-64-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-65-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-66-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2120-67-0x0000000000400000-0x00000000004AF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-24 09:17
Reported
2024-02-24 09:20
Platform
win10v2004-20240221-en
Max time kernel
151s
Max time network
155s
Command Line
Signatures
Darkcomet
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindosU = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WindosU.exe" | C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4636 set thread context of 2312 | N/A | C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Enumerates physical storage devices
NSIS installer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe
"C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe
"C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | 2.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
| US | 8.8.8.8:53 | c2h.no-ip.biz | udp |
Files
memory/4636-0-0x0000000074890000-0x0000000074E41000-memory.dmp
memory/4636-2-0x00000000012E0000-0x00000000012F0000-memory.dmp
memory/4636-1-0x0000000074890000-0x0000000074E41000-memory.dmp
memory/2312-3-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-4-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-6-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-7-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-8-0x00000000024E0000-0x00000000024E1000-memory.dmp
memory/2312-9-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-10-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-11-0x0000000000400000-0x00000000004AF000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe
| MD5 | b6838889d5af2a20c4786f93aa007ee0 |
| SHA1 | 655c6869c824676aa3c44c783daced735798f9da |
| SHA256 | 99f686c9c12c8ad5367998e4d3d850171c31b43901f1ac22d7744aa7cfadb231 |
| SHA512 | 1222a035f9c38b6bfb487e262e7e6b23486a3090096e75fc03640cc1a1af8c02df9c1f380d8de5a6e3f0839d091468e27193df0a7e29282c3e5286aad84511a1 |
C:\Users\Admin\AppData\Local\Temp\nsy19EE.tmp\FindProcDLL.dll
| MD5 | 8614c450637267afacad1645e23ba24a |
| SHA1 | e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2 |
| SHA256 | 0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758 |
| SHA512 | af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b |
memory/1280-29-0x0000000010000000-0x0000000010003000-memory.dmp
memory/4636-30-0x0000000074890000-0x0000000074E41000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\nsy19EE.tmp\nsDialogs.dll
| MD5 | c10e04dd4ad4277d5adc951bb331c777 |
| SHA1 | b1e30808198a3ae6d6d1cca62df8893dc2a7ad43 |
| SHA256 | e31ad6c6e82e603378cb6b80e67d0e0dcd9cf384e1199ac5a65cb4935680021a |
| SHA512 | 853a5564bf751d40484ea482444c6958457cb4a17fb973cf870f03f201b8b2643be41bccde00f6b2026dc0c3d113e6481b0dc4c7b0f3ae7966d38c92c6b5862e |
C:\Users\Admin\AppData\Local\Temp\nsy19EE.tmp\System.dll
| MD5 | c17103ae9072a06da581dec998343fc1 |
| SHA1 | b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d |
| SHA256 | dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f |
| SHA512 | d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f |
memory/2312-49-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-50-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-51-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-52-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-53-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-54-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-55-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-56-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-57-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-58-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-59-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-60-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-61-0x0000000000400000-0x00000000004AF000-memory.dmp
memory/2312-62-0x0000000000400000-0x00000000004AF000-memory.dmp