Analysis
-
max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 15:44
Behavioral task
behavioral1
Sample
nursultan nexgen fix.exe
Resource
win7-20231129-en
General
-
Target
nursultan nexgen fix.exe
-
Size
1.5MB
-
MD5
a3d07c747770c9a471a44446e46e33d5
-
SHA1
8340534fb1770bae9660287ddb0496e243efcfe4
-
SHA256
16015088c3352a8257f420555e7ce6245aa0e6682deeca79bf7e08c24e1ac3de
-
SHA512
307cbdddaa9f426f8ceec060c2c0b1ab5ed3573e327dbcfdda7b1dfd22cf17559f017d835d71bdd15397fa95b0c7dfbfb4cd6b51cd5b2adc1d1cddc8ffe27f99
-
SSDEEP
24576:U2G/nvxW3Ww0tpfnNGcvUCxt9groiK5Cg3ZRvm43TzvmF2cK07:UbA30pfnLRRgrheJROuTzvIR
Malware Config
Signatures
-
DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
-
Process spawned unexpected child process 24 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exedescription pid pid_target process target process Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2484 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2616 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2444 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2508 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2796 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3028 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2228 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1508 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 944 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2184 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1620 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 636 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 704 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2044 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2736 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2752 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2536 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2832 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2824 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2932 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1748 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2852 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2312 2608 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1928 2608 schtasks.exe -
Processes:
resource yara_rule \portagentbrowserweb\Containerruntime.exe dcrat behavioral1/memory/2644-13-0x0000000000AD0000-0x0000000000C02000-memory.dmp dcrat behavioral1/memory/1744-39-0x0000000001050000-0x0000000001182000-memory.dmp dcrat -
Disables Task Manager via registry modification
-
Executes dropped EXE 2 IoCs
Processes:
Containerruntime.exesppsvc.exepid process 2644 Containerruntime.exe 1744 sppsvc.exe -
Loads dropped DLL 2 IoCs
Processes:
cmd.exepid process 2588 cmd.exe 2588 cmd.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Drops file in Program Files directory 2 IoCs
Processes:
Containerruntime.exedescription ioc process File created C:\Program Files (x86)\Internet Explorer\it-IT\csrss.exe Containerruntime.exe File created C:\Program Files (x86)\Internet Explorer\it-IT\886983d96e3d3e Containerruntime.exe -
Drops file in Windows directory 4 IoCs
Processes:
Containerruntime.exedescription ioc process File created C:\Windows\ja-JP\dwm.exe Containerruntime.exe File created C:\Windows\ja-JP\6cb0b6c459d5d3 Containerruntime.exe File created C:\Windows\schemas\winlogon.exe Containerruntime.exe File created C:\Windows\schemas\cc11b995f2a76d Containerruntime.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Creates scheduled task(s) 1 TTPs 24 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exepid process 2508 schtasks.exe 2796 schtasks.exe 1508 schtasks.exe 704 schtasks.exe 2832 schtasks.exe 2484 schtasks.exe 2736 schtasks.exe 2824 schtasks.exe 2852 schtasks.exe 2312 schtasks.exe 2616 schtasks.exe 3028 schtasks.exe 2184 schtasks.exe 636 schtasks.exe 2044 schtasks.exe 2536 schtasks.exe 1748 schtasks.exe 2444 schtasks.exe 2228 schtasks.exe 944 schtasks.exe 1620 schtasks.exe 2752 schtasks.exe 2932 schtasks.exe 1928 schtasks.exe -
Modifies registry key 1 TTPs 1 IoCs
-
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
Containerruntime.exesppsvc.exepid process 2644 Containerruntime.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe 1744 sppsvc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
sppsvc.exepid process 1744 sppsvc.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Containerruntime.exesppsvc.exedescription pid process Token: SeDebugPrivilege 2644 Containerruntime.exe Token: SeDebugPrivilege 1744 sppsvc.exe -
Suspicious use of WriteProcessMemory 19 IoCs
Processes:
nursultan nexgen fix.exeWScript.execmd.exeContainerruntime.exedescription pid process target process PID 2344 wrote to memory of 3008 2344 nursultan nexgen fix.exe WScript.exe PID 2344 wrote to memory of 3008 2344 nursultan nexgen fix.exe WScript.exe PID 2344 wrote to memory of 3008 2344 nursultan nexgen fix.exe WScript.exe PID 2344 wrote to memory of 3008 2344 nursultan nexgen fix.exe WScript.exe PID 3008 wrote to memory of 2588 3008 WScript.exe cmd.exe PID 3008 wrote to memory of 2588 3008 WScript.exe cmd.exe PID 3008 wrote to memory of 2588 3008 WScript.exe cmd.exe PID 3008 wrote to memory of 2588 3008 WScript.exe cmd.exe PID 2588 wrote to memory of 2644 2588 cmd.exe Containerruntime.exe PID 2588 wrote to memory of 2644 2588 cmd.exe Containerruntime.exe PID 2588 wrote to memory of 2644 2588 cmd.exe Containerruntime.exe PID 2588 wrote to memory of 2644 2588 cmd.exe Containerruntime.exe PID 2644 wrote to memory of 1744 2644 Containerruntime.exe sppsvc.exe PID 2644 wrote to memory of 1744 2644 Containerruntime.exe sppsvc.exe PID 2644 wrote to memory of 1744 2644 Containerruntime.exe sppsvc.exe PID 2588 wrote to memory of 1464 2588 cmd.exe reg.exe PID 2588 wrote to memory of 1464 2588 cmd.exe reg.exe PID 2588 wrote to memory of 1464 2588 cmd.exe reg.exe PID 2588 wrote to memory of 1464 2588 cmd.exe reg.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe"C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\portagentbrowserweb\WRLLAAz5wgYRSh1EMNi6f5aM.vbe"2⤵
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\portagentbrowserweb\6X9rFgrS3wv5iM7PLkmLFP1j.bat" "3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2588 -
C:\portagentbrowserweb\Containerruntime.exe"C:\portagentbrowserweb\Containerruntime.exe"4⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644 -
C:\Users\Default\Cookies\sppsvc.exe"C:\Users\Default\Cookies\sppsvc.exe"5⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1744 -
C:\Windows\SysWOW64\reg.exereg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f4⤵
- Modifies registry key
PID:1464
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\audiodg.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2484
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\MSOCache\All Users\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2616
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodga" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2444
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Windows\schemas\winlogon.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2508
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\schemas\winlogon.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2796
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Windows\schemas\winlogon.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:3028
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Windows\ja-JP\dwm.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2228
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\ja-JP\dwm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1508
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Windows\ja-JP\dwm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:944
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Recovery\d6b272a2-8f1b-11ee-9e28-7ed9061e9c39\services.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1620
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\d6b272a2-8f1b-11ee-9e28-7ed9061e9c39\services.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2184
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Recovery\d6b272a2-8f1b-11ee-9e28-7ed9061e9c39\services.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:636
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Cookies\sppsvc.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:704
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Default\Cookies\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2044
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Cookies\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2736
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Recovery\d6b272a2-8f1b-11ee-9e28-7ed9061e9c39\System.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2752
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\d6b272a2-8f1b-11ee-9e28-7ed9061e9c39\System.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2536
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Recovery\d6b272a2-8f1b-11ee-9e28-7ed9061e9c39\System.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2832
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\taskhost.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2824
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2932
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1748
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Internet Explorer\it-IT\csrss.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2852
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\it-IT\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2312
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Internet Explorer\it-IT\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1928
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\portagentbrowserweb\6X9rFgrS3wv5iM7PLkmLFP1j.batFilesize
157B
MD5c8f8a078dace2ff4cb106803c9199643
SHA1a5029ff4c4f0f24b0fbe2951c9a8002501ebd3b5
SHA2561b99d39fa273f33b072c67e0df7d33b1699fa17b7c7139467a658302a5ed0e0d
SHA512efaea3b4653768bbd135a0ec55319df2464f1d440ad982f31a5eff05c5ba5032f4718683ff6419c668bf1f34a117b5a101f56d1efc1d74ad93e692c52686f999
-
C:\portagentbrowserweb\WRLLAAz5wgYRSh1EMNi6f5aM.vbeFilesize
220B
MD561a07f2f9e8e9b1f5175b2d60c3e3f18
SHA1e695b0c2b43c786453bf3f6ae504f0626951d281
SHA2565c75708ec9e4fe419a2fd1067bd5793bacb28140177cc6b36300fbf28e7c23d1
SHA5128ef3529f6bf504224e7803019f1e162aead7961bc1a5115f50fb5f580570e8b04707da21a7aab4eb7f1554a3b5333597fb3335e5f6a74dabfdb0583eecb35b5d
-
\portagentbrowserweb\Containerruntime.exeFilesize
1.2MB
MD55887a563351ca99247b7e2c448bd9f2e
SHA1b24695e88143863297535989900bb7521ea86d67
SHA256e74cbd74c838db604926e27322342c02f803b95f98680d4089b5c01ed93fb390
SHA512b7d82bd09ba64891b75bbb9356de74a1ed0835709a391698c1301825777418f57e4f2ae3c260d3f7b6ada05d0e7ddeb4a6b75901fdf53bdd82ffa2febb685107
-
memory/1744-39-0x0000000001050000-0x0000000001182000-memory.dmpFilesize
1.2MB
-
memory/2644-13-0x0000000000AD0000-0x0000000000C02000-memory.dmpFilesize
1.2MB
-
memory/2644-14-0x0000000000150000-0x000000000016C000-memory.dmpFilesize
112KB
-
memory/2644-15-0x0000000000170000-0x0000000000186000-memory.dmpFilesize
88KB
-
memory/2644-16-0x0000000000390000-0x000000000039C000-memory.dmpFilesize
48KB