8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3

General

Target

Bootstrapper (1).exe
Size

800KB
MD5

02c70d9d6696950c198db93b7f6a835e
SHA1

30231a467a49cc37768eea0f55f4bea1cbfb48e2
SHA256

8f2e28588f2303bd8d7a9b0c3ff6a9cb16fa93f8ddc9c5e0666a8c12d6880ee3
SHA512

431d9b9918553bff4f4a5bc2a5e7b7015f8ad0e2d390bb4d5264d08983372424156524ef5587b24b67d1226856fc630aaca08edc8113097e0094501b4f08efeb
SSDEEP

12288:qhd8cjaLXVh84wEFkW1mocaBj6WtiRPpptHxQ0z:2ycjar84w5W4ocaBj6y2tHDz

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
696	BootstrapperV2.04.exe
3516	Solara.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	pastebin.com
1	pastebin.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2188	ipconfig.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4780	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3516	Solara.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4308	Bootstrapper (1).exe
Token: SeDebugPrivilege	696	BootstrapperV2.04.exe
Token: SeDebugPrivilege	3516	Solara.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 4600	4308	Bootstrapper (1).exe	78
PID 4308 wrote to memory of 4600	4308	Bootstrapper (1).exe	78
PID 4600 wrote to memory of 2188	4600	cmd.exe	80
PID 4600 wrote to memory of 2188	4600	cmd.exe	80
PID 4308 wrote to memory of 696	4308	Bootstrapper (1).exe	81
PID 4308 wrote to memory of 696	4308	Bootstrapper (1).exe	81
PID 696 wrote to memory of 3516	696	BootstrapperV2.04.exe	82
PID 696 wrote to memory of 3516	696	BootstrapperV2.04.exe	82

C:\Users\Admin\AppData\Local\Temp\Bootstrapper (1).exe
"C:\Users\Admin\AppData\Local\Temp\Bootstrapper (1).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c ipconfig /all
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4600
- - C:\Windows\system32\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:2188
- C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.04.exe
  "C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.04.exe" --oldBootstrapper "C:\Users\Admin\AppData\Local\Temp\Bootstrapper (1).exe" --isUpdate true
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:696
- - C:\ProgramData\Solara\Solara.exe
    "C:\ProgramData\Solara\Solara.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3516

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4496

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\ProgramData\Solara\bin\path.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:4780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Solara\Newtonsoft.Json.dll

Filesize
695KB

MD5
195ffb7167db3219b217c4fd439eedd6

SHA1
1e76e6099570ede620b76ed47cf8d03a936d49f8

SHA256
e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d

SHA512
56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

Download Submit
C:\ProgramData\Solara\Solara.exe

Filesize
133KB

MD5
c6f770cbb24248537558c1f06f7ff855

SHA1
fdc2aaae292c32a58ea4d9974a31ece26628fdd7

SHA256
d1e4a542fa75f6a6fb636b5de6f7616e2827a79556d3d9a4afc3ecb47f0beb2b

SHA512
cac56c58bd01341ec3ff102fe04fdb66625baad1d3dd7127907cd8453d2c6e2226ad41033e16ba20413a509fc7c826e4fdc0c0d553175eb6f164c2fc0906614a

Download Submit
C:\ProgramData\Solara\Wpf.Ui.dll

Filesize
5.2MB

MD5
aead90ab96e2853f59be27c4ec1e4853

SHA1
43cdedde26488d3209e17efff9a51e1f944eb35f

SHA256
46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed

SHA512
f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

Download Submit
C:\ProgramData\Solara\bin\path.txt

Filesize
34B

MD5
0e2184f1c7464b6617329fb18f107b4f

SHA1
6f22f98471e33c9db10d6f6f1728e98852e25b8f

SHA256
dbf5f44e1b84a298dbbcad3c31a617d2f6cfa08eb5d16e05a5c28726c574d4eb

SHA512
8e745c0215d52e15702551f29efb882a5eba97b5f279ccc29293b1a9b1b8661bf71b548569f9a99fa35c35a15d1b6b288d3c381c1292418c36dc89e2fa0b3a37

Download Submit
C:\Users\Admin\AppData\Local\Temp\BootstrapperV2.04.exe

Filesize
2.8MB

MD5
be4da425d9b7593e358ffbfca29f9c70

SHA1
dc98530aad9728d779866ae957a738c52b13a565

SHA256
c5277ddb6e51181d2b8bad59acf5f2badf5613b1e73384a84b793f720aa76c0d

SHA512
35790944f5855038f8357c0f6d11ea81b260632e590c26f9342e8beb1a8dfd2e3eb9efa11f8378f8542cad45e7675af3d29cf27424accf35aaa6aeb34487155b

Download Submit
memory/696-28-0x0000022F7BB10000-0x0000022F7BB26000-memory.dmp

Filesize
88KB

Download
memory/696-33-0x0000022F51530000-0x0000022F515E2000-memory.dmp

Filesize
712KB

Download
memory/696-19-0x0000022F750B0000-0x0000022F7538A000-memory.dmp

Filesize
2.9MB

Download
memory/696-20-0x0000022F757F0000-0x0000022F75800000-memory.dmp

Filesize
64KB

Download
memory/696-21-0x0000022F7B4B0000-0x0000022F7B4B8000-memory.dmp

Filesize
32KB

Download
memory/696-22-0x0000022F7BAA0000-0x0000022F7BAD8000-memory.dmp

Filesize
224KB

Download
memory/696-23-0x0000022F7B500000-0x0000022F7B50E000-memory.dmp

Filesize
56KB

Download
memory/696-24-0x0000022F7C160000-0x0000022F7C260000-memory.dmp

Filesize
1024KB

Download
memory/696-25-0x0000022F7BA60000-0x0000022F7BA6A000-memory.dmp

Filesize
40KB

Download
memory/696-27-0x0000022F7BA90000-0x0000022F7BA98000-memory.dmp

Filesize
32KB

Download
memory/696-29-0x0000022F7BA80000-0x0000022F7BA8A000-memory.dmp

Filesize
40KB

Download
memory/696-462-0x00007FF8C0A10000-0x00007FF8C14D2000-memory.dmp

Filesize
10.8MB

Download
memory/696-26-0x0000022F7BAE0000-0x0000022F7BB08000-memory.dmp

Filesize
160KB

Download
memory/696-30-0x0000022F7BA70000-0x0000022F7BA7A000-memory.dmp

Filesize
40KB

Download
memory/696-31-0x0000022F7BB40000-0x0000022F7BB48000-memory.dmp

Filesize
32KB

Download
memory/696-17-0x00007FF8C0A10000-0x00007FF8C14D2000-memory.dmp

Filesize
10.8MB

Download
memory/696-35-0x0000022F51630000-0x0000022F5164E000-memory.dmp

Filesize
120KB

Download
memory/696-36-0x0000022F7BB50000-0x0000022F7BB5A000-memory.dmp

Filesize
40KB

Download
memory/696-38-0x0000022F80060000-0x0000022F80072000-memory.dmp

Filesize
72KB

Download
memory/696-419-0x00007FF8C0A10000-0x00007FF8C14D2000-memory.dmp

Filesize
10.8MB

Download
memory/3516-455-0x000002C45C3E0000-0x000002C45C404000-memory.dmp

Filesize
144KB

Download
memory/3516-457-0x000002C476F80000-0x000002C4774BC000-memory.dmp

Filesize
5.2MB

Download
memory/3516-458-0x000002C476CF0000-0x000002C476DAA000-memory.dmp

Filesize
744KB

Download
memory/3516-460-0x000002C476DB0000-0x000002C476E62000-memory.dmp

Filesize
712KB

Download
memory/4308-18-0x00007FF8C0A10000-0x00007FF8C14D2000-memory.dmp

Filesize
10.8MB

Download
memory/4308-4-0x000002AED8E70000-0x000002AED8E92000-memory.dmp

Filesize
136KB

Download
memory/4308-2-0x00007FF8C0A10000-0x00007FF8C14D2000-memory.dmp

Filesize
10.8MB

Download
memory/4308-0-0x00007FF8C0A13000-0x00007FF8C0A15000-memory.dmp

Filesize
8KB

Download
memory/4308-1-0x000002AED6E60000-0x000002AED6F2E000-memory.dmp

Filesize
824KB

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Analysis

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