jester | 3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

General

Target

3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Size

456KB
MD5

b7061d79323a4795c17c4ddda7e46da4
SHA1

c529ceec64e01721078de2d710dc15d694918266
SHA256

3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853
SHA512

8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

Score

10^/10

jester fanyze collection spyware stealer

Malware Config

Extracted

Family

jester

Botnet

fanyze

C2

http://jesterdcuxzbey4xvlwwheoecpltru5be2mzuk4w7a7nrhckdjjhrbyd.onion/report/fanyze

https://api.anonfiles.com/upload?token=d26d620842507144

Mutex

f9999b04-5f6b-47c3-830e-f07171c30d02

Attributes

license_key
9A554B1F2269B7AF81AF6B074943117B

Signatures

Jester
Jester is an information stealer malware written in C#.
stealer jester

Executes dropped EXE 1 IoCs

pid	Process
1952	Tor.exe

Loads dropped DLL 7 IoCs

pid	Process
1952	Tor.exe
1952	Tor.exe
1952	Tor.exe
1952	Tor.exe
1952	Tor.exe
1952	Tor.exe
1952	Tor.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

Modifies system certificate store 2 TTPs 4 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 040000000100000010000000d474de575c39b2d39c8583c5c065498a0300000001000000140000005fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc251d00000001000000100000008f76b981d528ad4770088245e2031b630b0000000100000012000000440069006700690043006500720074000000140000000100000014000000b13ec36903f8bf4701d498261a0802ef63642bc35300000001000000230000003021301f06096086480186fd6c020130123010060a2b0601040182373c0101030200c0090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b060105050703080f0000000100000014000000e35ef08d884f0a0ade2f75e96301ce6230f213a82000000001000000c9030000308203c5308202ada003020102021002ac5c266a0b409b8f0b79f2ae462577300d06092a864886f70d0101050500306c310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d312b30290603550403132244696769436572742048696768204173737572616e636520455620526f6f74204341301e170d3036313131303030303030305a170d3331313131303030303030305a306c310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d312b30290603550403132244696769436572742048696768204173737572616e636520455620526f6f7420434130820122300d06092a864886f70d01010105000382010f003082010a0282010100c6cce573e6fbd4bbe52d2d32a6dfe5813fc9cd2549b6712ac3d5943467a20a1cb05f69a640b1c4b7b28fd098a4a941593ad3dc94d63cdb7438a44acc4d2582f74aa5531238eef3496d71917e63b6aba65fc3a484f84f6251bef8c5ecdb3892e306e508910cc4284155fbcb5a89157e71e835bf4d72093dbe3a38505b77311b8db3c724459aa7ac6d00145a04b7ba13eb510a984141224e656187814150a6795c89de194a57d52ee65d1c532c7e98cd1a0616a46873d03404135ca171d35a7c55db5e64e13787305604e511b4298012f1793988a202117c2766b788b778f2ca0aa838ab0a64c2bf665d9584c1a1251e875d1a500b2012cc41bb6e0b5138b84bcb0203010001a3633061300e0603551d0f0101ff040403020186300f0603551d130101ff040530030101ff301d0603551d0e04160414b13ec36903f8bf4701d498261a0802ef63642bc3301f0603551d23041830168014b13ec36903f8bf4701d498261a0802ef63642bc3300d06092a864886f70d010105050003820101001c1a0697dcd79c9f3c886606085721db2147f82a67aabf183276401057c18af37ad911658e35fa9efc45b59ed94c314bb891e8432c8eb378cedbe3537971d6e5219401da55879a2464f68a66ccde9c37cda834b1699b23c89e78222b7043e35547316119ef58c5852f4e30f6a0311623c8e7e2651633cbbf1a1ba03df8ca5e8b318b6008892d0c065c52b7c4f90a98d1155f9f12be7c366338bd44a47fe4262b0ac497690de98ce2c01057b8c876129155f24869d8bc2a025b0f44d42031dbf4ba70265d90609ebc4b17092fb4cb1e4368c90727c1d25cf7ea21b968129c3c9cbf9efc805c9b63cdec47aa252767a037f300827d54d7a9f8e92e13a377e81f4a	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 1640	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	28
PID 744 wrote to memory of 1640	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	28
PID 744 wrote to memory of 1640	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	28
PID 1640 wrote to memory of 824	1640	cmd.exe	30
PID 1640 wrote to memory of 824	1640	cmd.exe	30
PID 1640 wrote to memory of 824	1640	cmd.exe	30
PID 1640 wrote to memory of 1716	1640	cmd.exe	31
PID 1640 wrote to memory of 1716	1640	cmd.exe	31
PID 1640 wrote to memory of 1716	1640	cmd.exe	31
PID 1640 wrote to memory of 1788	1640	cmd.exe	32
PID 1640 wrote to memory of 1788	1640	cmd.exe	32
PID 1640 wrote to memory of 1788	1640	cmd.exe	32
PID 744 wrote to memory of 1952	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	35
PID 744 wrote to memory of 1952	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	35
PID 744 wrote to memory of 1952	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	35
PID 744 wrote to memory of 1952	744	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe	35

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe

C:\Users\Admin\AppData\Local\Temp\3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe
"C:\Users\Admin\AppData\Local\Temp\3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:744
- C:\Windows\system32\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:824
- - C:\Windows\system32\netsh.exe
    netsh wlan show profile
    3⤵
    PID:1716
- - C:\Windows\system32\findstr.exe
    findstr All
    3⤵
    PID:1788
- C:\Users\Admin\AppData\Local\Temp\Tor\Tor.exe
  "C:\Users\Admin\AppData\Local\Temp\Tor\Tor.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Web Service

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/744-56-0x0000000000390000-0x00000000003CE000-memory.dmp

Filesize
248KB

Download
memory/744-57-0x000000001AFF0000-0x000000001AFF2000-memory.dmp

Filesize
8KB

Download
memory/744-55-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

Filesize
9.9MB

Download
memory/1716-58-0x000007FEFBEB1000-0x000007FEFBEB3000-memory.dmp

Filesize
8KB

Download
memory/1952-68-0x0000000075321000-0x0000000075323000-memory.dmp

Filesize
8KB

Download
memory/1952-75-0x0000000074F60000-0x000000007505B000-memory.dmp

Filesize
1004KB

Download
memory/1952-76-0x0000000074920000-0x0000000074946000-memory.dmp

Filesize
152KB

Download
memory/1952-77-0x0000000001080000-0x0000000001493000-memory.dmp

Filesize
4.1MB

Download
memory/1952-78-0x0000000074F60000-0x000000007505B000-memory.dmp

Filesize
1004KB

Download
memory/1952-79-0x0000000074A40000-0x0000000074D35000-memory.dmp

Filesize
3.0MB

Download
memory/1952-81-0x0000000074920000-0x0000000074946000-memory.dmp

Filesize
152KB

Download
memory/1952-80-0x0000000074950000-0x0000000074A36000-memory.dmp

Filesize
920KB

Download
memory/1952-82-0x0000000001080000-0x0000000001493000-memory.dmp

Filesize
4.1MB

Download

Analysis

Sharing