Analysis Overview
SHA256
8b0ac881b039733c573ab30cf037e0ce3d6f2981c0eb2342902b91ecf891adff
Threat Level: Known bad
The file acc4fdc0e6c701455ee76253ebf158b1 was found to be: Known bad.
Malicious Activity Summary
Oski
Checks computer location settings
Reads user/profile data of web browsers
Suspicious use of SetThreadContext
Program crash
Enumerates physical storage devices
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-02-28 20:24
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-28 20:24
Reported
2024-02-28 20:26
Platform
win7-20240221-en
Max time kernel
121s
Max time network
124s
Command Line
Signatures
Oski
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2176 set thread context of 2420 | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"
C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6D8.tmp"
C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
"{path}"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2420 -s 112
Network
Files
memory/2176-1-0x0000000073FA0000-0x000000007468E000-memory.dmp
memory/2176-0-0x0000000001180000-0x000000000123C000-memory.dmp
memory/2176-2-0x0000000004CB0000-0x0000000004CF0000-memory.dmp
memory/2176-3-0x0000000000440000-0x0000000000448000-memory.dmp
memory/2176-4-0x0000000073FA0000-0x000000007468E000-memory.dmp
memory/2176-5-0x0000000004CB0000-0x0000000004CF0000-memory.dmp
memory/2176-6-0x0000000005130000-0x00000000051B2000-memory.dmp
memory/2176-7-0x0000000000B90000-0x0000000000BCC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpC6D8.tmp
| MD5 | dc997eccbf233ce4494baa204211c389 |
| SHA1 | 66a86a2e34e68214faa68926f888fdee447dc951 |
| SHA256 | 46893f6b7ad046a5ff41d2ba1c208314bfc1b5a52e55289e91f12aa7cf657fe7 |
| SHA512 | 1b25d03350961170d8455c5556e7c8a5408dba748902038630b6760917daa0b71a5d8768a3796d1d2ae0ebb8aa7e6841a4ea21c047e248fe93ffdf7bc3d1b3d6 |
memory/2420-11-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2420-12-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2420-14-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2420-13-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2420-16-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2420-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2420-19-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2420-21-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2176-22-0x0000000073FA0000-0x000000007468E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-28 20:24
Reported
2024-02-28 20:26
Platform
win10v2004-20240226-en
Max time kernel
144s
Max time network
153s
Command Line
Signatures
Oski
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | N/A |
Reads user/profile data of web browsers
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3968 set thread context of 4304 | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp64B0.tmp"
C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
"{path}"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4304 -ip 4304
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4304 -s 1304
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 186.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.160.77.104.in-addr.arpa | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | zau.divendesign.in | udp |
| US | 8.8.8.8:53 | 189.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 185.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| IE | 172.253.116.95:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 95.116.253.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 16.173.189.20.in-addr.arpa | udp |
Files
memory/3968-0-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/3968-1-0x0000000000790000-0x000000000084C000-memory.dmp
memory/3968-2-0x0000000005410000-0x0000000005420000-memory.dmp
memory/3968-3-0x0000000005280000-0x0000000005288000-memory.dmp
memory/3968-4-0x0000000005420000-0x00000000054BC000-memory.dmp
memory/3968-5-0x00000000054C0000-0x0000000005552000-memory.dmp
memory/3968-6-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/3968-7-0x0000000005410000-0x0000000005420000-memory.dmp
memory/3968-8-0x0000000005C40000-0x0000000005CC2000-memory.dmp
memory/3968-9-0x0000000005B50000-0x0000000005B8C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp64B0.tmp
| MD5 | 1beb7445d23a4c634a937eaa7cc15026 |
| SHA1 | 953e765d8ccf852a4c6a6293c289fe380df69d3f |
| SHA256 | ce3bd123d2f11c4ee3a0c94109d982dd4e0c25eda9a2f54b67ef3e2363421895 |
| SHA512 | 35b3b70778b741bcb9d204ffc83044f9fd75be68cb13b471039eb19579c4ef29965166a8d3573eaf590869c0b37a3f380d152e470024b521c50b1a0b1210ad04 |
memory/4304-13-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4304-14-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4304-15-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4304-17-0x0000000000400000-0x0000000000438000-memory.dmp
memory/3968-18-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/4304-21-0x0000000000400000-0x0000000000438000-memory.dmp