Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
07-01-2025 21:19
Static task
static1
Behavioral task
behavioral1
Sample
Bootstrapper.exe
Resource
win7-20240903-en
General
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Target
Bootstrapper.exe
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Size
800KB
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MD5
02c70d9d6696950c198db93b7f6a835e
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SHA1
30231a467a49cc37768eea0f55f4bea1cbfb48e2
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SHA256
8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3
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SHA512
431d9b9918553bff4f4a5bc2a5e7b7015f8ad0e2d390bb4d5264d08983372424156524ef5587b24b67d1226856fc630aaca08edc8113097e0094501b4f08efeb
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SSDEEP
12288:qhd8cjaLXVh84wEFkW1mocaBj6WtiRPpptHxQ0z:2ycjar84w5W4ocaBj6y2tHDz
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Solara.exe -
Downloads MZ/PE file
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Solara.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Solara.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation Bootstrapper.exe Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation BootstrapperV2.13.exe -
Executes dropped EXE 2 IoCs
pid Process 2184 BootstrapperV2.13.exe 1216 Solara.exe -
Loads dropped DLL 2 IoCs
pid Process 1216 Solara.exe 1216 Solara.exe -
resource yara_rule behavioral2/files/0x0007000000023d62-107.dat themida behavioral2/memory/1216-111-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-113-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-112-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-110-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-114-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-115-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-116-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-117-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-118-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-119-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-120-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-121-0x0000000180000000-0x0000000181173000-memory.dmp themida behavioral2/memory/1216-122-0x0000000180000000-0x0000000181173000-memory.dmp themida -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 1.0.0.1 -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Solara.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
flow ioc 55 pastebin.com 56 pastebin.com 84 pastebin.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1216 Solara.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
pid Process 3592 ipconfig.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2184 BootstrapperV2.13.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe 1216 Solara.exe -
Suspicious use of AdjustPrivilegeToken 45 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2288 WMIC.exe Token: SeSecurityPrivilege 2288 WMIC.exe Token: SeTakeOwnershipPrivilege 2288 WMIC.exe Token: SeLoadDriverPrivilege 2288 WMIC.exe Token: SeSystemProfilePrivilege 2288 WMIC.exe Token: SeSystemtimePrivilege 2288 WMIC.exe Token: SeProfSingleProcessPrivilege 2288 WMIC.exe Token: SeIncBasePriorityPrivilege 2288 WMIC.exe Token: SeCreatePagefilePrivilege 2288 WMIC.exe Token: SeBackupPrivilege 2288 WMIC.exe Token: SeRestorePrivilege 2288 WMIC.exe Token: SeShutdownPrivilege 2288 WMIC.exe Token: SeDebugPrivilege 2288 WMIC.exe Token: SeSystemEnvironmentPrivilege 2288 WMIC.exe Token: SeRemoteShutdownPrivilege 2288 WMIC.exe Token: SeUndockPrivilege 2288 WMIC.exe Token: SeManageVolumePrivilege 2288 WMIC.exe Token: 33 2288 WMIC.exe Token: 34 2288 WMIC.exe Token: 35 2288 WMIC.exe Token: 36 2288 WMIC.exe Token: SeIncreaseQuotaPrivilege 2288 WMIC.exe Token: SeSecurityPrivilege 2288 WMIC.exe Token: SeTakeOwnershipPrivilege 2288 WMIC.exe Token: SeLoadDriverPrivilege 2288 WMIC.exe Token: SeSystemProfilePrivilege 2288 WMIC.exe Token: SeSystemtimePrivilege 2288 WMIC.exe Token: SeProfSingleProcessPrivilege 2288 WMIC.exe Token: SeIncBasePriorityPrivilege 2288 WMIC.exe Token: SeCreatePagefilePrivilege 2288 WMIC.exe Token: SeBackupPrivilege 2288 WMIC.exe Token: SeRestorePrivilege 2288 WMIC.exe Token: SeShutdownPrivilege 2288 WMIC.exe Token: SeDebugPrivilege 2288 WMIC.exe Token: SeSystemEnvironmentPrivilege 2288 WMIC.exe Token: SeRemoteShutdownPrivilege 2288 WMIC.exe Token: SeUndockPrivilege 2288 WMIC.exe Token: SeManageVolumePrivilege 2288 WMIC.exe Token: 33 2288 WMIC.exe Token: 34 2288 WMIC.exe Token: 35 2288 WMIC.exe Token: 36 2288 WMIC.exe Token: SeDebugPrivilege 2180 Bootstrapper.exe Token: SeDebugPrivilege 2184 BootstrapperV2.13.exe Token: SeDebugPrivilege 1216 Solara.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2184 BootstrapperV2.13.exe 1216 Solara.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2180 wrote to memory of 4336 2180 Bootstrapper.exe 83 PID 2180 wrote to memory of 4336 2180 Bootstrapper.exe 83 PID 4336 wrote to memory of 3592 4336 cmd.exe 85 PID 4336 wrote to memory of 3592 4336 cmd.exe 85 PID 2180 wrote to memory of 1460 2180 Bootstrapper.exe 86 PID 2180 wrote to memory of 1460 2180 Bootstrapper.exe 86 PID 1460 wrote to memory of 2288 1460 cmd.exe 88 PID 1460 wrote to memory of 2288 1460 cmd.exe 88 PID 2180 wrote to memory of 2184 2180 Bootstrapper.exe 90 PID 2180 wrote to memory of 2184 2180 Bootstrapper.exe 90 PID 2184 wrote to memory of 1216 2184 BootstrapperV2.13.exe 100 PID 2184 wrote to memory of 1216 2184 BootstrapperV2.13.exe 100 -
cURL User-Agent 8 IoCs
Uses User-Agent string associated with cURL utility.
description flow ioc HTTP User-Agent header 80 curl/8.9.1-DEV HTTP User-Agent header 81 curl/8.9.1-DEV HTTP User-Agent header 61 curl/8.9.1-DEV HTTP User-Agent header 66 curl/8.9.1-DEV HTTP User-Agent header 67 curl/8.9.1-DEV HTTP User-Agent header 68 curl/8.9.1-DEV HTTP User-Agent header 69 curl/8.9.1-DEV HTTP User-Agent header 71 curl/8.9.1-DEV
Processes
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C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2180 -
C:\Windows\SYSTEM32\cmd.exe"cmd" /c ipconfig /all2⤵
- Suspicious use of WriteProcessMemory
PID:4336 -
C:\Windows\system32\ipconfig.exeipconfig /all3⤵
- Gathers network information
PID:3592
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")2⤵
- Suspicious use of WriteProcessMemory
PID:1460 -
C:\Windows\System32\Wbem\WMIC.exewmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2288
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C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.13.exe"C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.13.exe" --oldBootstrapper "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe" --isUpdate true2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2184 -
C:\ProgramData\Solara\Solara.exe"C:\ProgramData\Solara\Solara.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1216
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
557KB
MD5b037ca44fd19b8eedb6d5b9de3e48469
SHA11f328389c62cf673b3de97e1869c139d2543494e
SHA25611e88b2ca921e5c88f64567f11bd83cbc396c10365d40972f3359fcc7965d197
SHA512fa89ab3347fd57486cf3064ad164574f70e2c2b77c382785479bfd5ab50caa0881de3c2763a0932feac2faaf09479ef699a04ba202866dc7e92640246ba9598b
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Filesize
50KB
MD5e107c88a6fc54cc3ceb4d85768374074
SHA1a8d89ae75880f4fca7d7167fae23ac0d95e3d5f6
SHA2568f821f0c818f8d817b82f76c25f90fde9fb73ff1ae99c3df3eaf2b955653c9c8
SHA512b39e07b0c614a0fa88afb1f3b0d9bb9ba9c932e2b30899002008220ccf1acb0f018d5414aee64d92222c2c39f3ffe2c0ad2d9962d23aaa4bf5750c12c7f3e6fe
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Filesize
14KB
MD5c5611717d40fbd17ec2b4276fa4a3be3
SHA13580f7d5598be93bca5aca3360b43c62b4e398cf
SHA256e122b05b104fac365c8304e3041416f65f299011bc70b6203c974bb98cbb76b2
SHA512f46e267620b1f52d4f0d2f42ea496ab0b6df12b6da977e581c2b4f7929a6aaf61c1dfca097e67215d00c2529a9aca53b6c418e4cc1630897f7b1fdab4bb8c143
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Filesize
14KB
MD5610eb8cecd447fcf97c242720d32b6bd
SHA14b094388e0e5135e29c49ce42ff2aa099b7f2d43
SHA256107d8d9d6c94d2a86ac5af4b4cec43d959c2e44d445017fea59e2e0a5efafdc7
SHA512cf15f49ef3ae578a5f725e24bdde86c33bbc4fd30a6eb885729fd3d9b151a4b13822fa8c35d3e0345ec43d567a246111764812596fd0ecc36582b8ee2a76c331
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Filesize
695KB
MD5195ffb7167db3219b217c4fd439eedd6
SHA11e76e6099570ede620b76ed47cf8d03a936d49f8
SHA256e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d
SHA51256eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac
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Filesize
613KB
MD5efa26a96b7af259f6682bc888a8b6a14
SHA19800a30228504c30e7d8aea873ded6a7d7d133bb
SHA25618f4dca864799d7cd00a26ae9fb7eccf5c7cf3883c51a5d0744fd92a60ca1953
SHA5127ca4539ab544aee162c7d74ac94b290b409944dd746286e35c8a2712db045d255b9907d1ebea6377d1406ddd87f118666121d0ec1abe0e9415de1bba6799f76e
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Filesize
6.9MB
MD512daf1ddbc2b2634a1a76adc3ec2d66c
SHA19a03f18aca54fb3b3190c1d65e424ffb9a4e6ffe
SHA2562b6a59eb5b1861138dd82e0d1ca304babe47886a0eeca29d45c5d36363cc3b23
SHA5127af52091f371bdad89be6900a7d3636d4f74fad2c9614ad1a322df342515d8163f224447c73a8a66875a56285806e6437794a292062fca11f2e5eeee03bea597
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Filesize
133KB
MD5a0bd0d1a66e7c7f1d97aedecdafb933f
SHA1dd109ac34beb8289030e4ec0a026297b793f64a3
SHA25679d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36
SHA5122a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50
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Filesize
5.2MB
MD5aead90ab96e2853f59be27c4ec1e4853
SHA143cdedde26488d3209e17efff9a51e1f944eb35f
SHA25646cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed
SHA512f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d
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Filesize
2.9MB
MD5fdeda3eb502d7eec02277cf08c7d926f
SHA1fbf43baa8e3c610933866630ba767b60bbd0313f
SHA2564d73c67dc61543f6116f8c0a8f6794ece2993e78713793c6e2066285e2607fd0
SHA5120f6e6074951eda7347cc527734b6103ed10002a2e28aaee2a74a4e346576b1e448175e10bbd8f8e9adbd36a15fa22557a7a7c6465c5fcb9dc772a41c00a0112d