echelon | b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3

Analysis

max time kernel
151s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
11/05/2022, 23:19

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General

Target
b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
Size 1.5MB
Sample220511-3a2zhscfe9
SHA256 b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3
MD5 fe7c13445868482b63e1ae71bca9d150
SHA1 78111d52ba0215bb531d487bc6e9a218ea768377
SHA512 c1a2bc27e1381f6ed142ffb8a6cdb0006a9161433dbb9222f83ec407cf0bb5510f9986108b4e96c4a3d0dd30659cc48baec96b9ca962082c64c0fcbcc8c0879c
MD5 SHA1 SHA512

Score

10^/10

echelon collection discovery spyware stealer

Malware Config

Signatures

Echelon
Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.
stealer spyware echelon

Echelon log file 1 IoCs

Detects a log file produced by Echelon.

yara_rule
echelon_log_file

Executes dropped EXE 2 IoCs

pid	Process
548	Decoder.exe
26520	systems32.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	Decoder.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	systems32.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows driver update.exe	Decoder.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows driver update.exe	Decoder.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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 3 IoCs

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

flow	ioc
22	api.ipify.org
23	api.ipify.org
28	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4896	schtasks.exe
27344	schtasks.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
2248	timeout.exe
2016	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
548	Decoder.exe
26520	systems32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
Token: SeDebugPrivilege	548	Decoder.exe
Token: SeDebugPrivilege	26520	systems32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 548	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	82
PID 4576 wrote to memory of 548	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	82
PID 4576 wrote to memory of 176	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	83
PID 4576 wrote to memory of 176	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	83
PID 4576 wrote to memory of 176	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	83
PID 4576 wrote to memory of 4208	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	85
PID 4576 wrote to memory of 4208	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	85
PID 4576 wrote to memory of 4208	4576	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe	85
PID 176 wrote to memory of 2248	176	cmd.exe	87
PID 176 wrote to memory of 2248	176	cmd.exe	87
PID 176 wrote to memory of 2248	176	cmd.exe	87
PID 4208 wrote to memory of 2016	4208	cmd.exe	88
PID 4208 wrote to memory of 2016	4208	cmd.exe	88
PID 4208 wrote to memory of 2016	4208	cmd.exe	88
PID 548 wrote to memory of 4896	548	Decoder.exe	91
PID 548 wrote to memory of 4896	548	Decoder.exe	91
PID 26520 wrote to memory of 27344	26520	systems32.exe	101
PID 26520 wrote to memory of 27344	26520	systems32.exe	101

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe

C:\Users\Admin\AppData\Local\Temp\b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe
"C:\Users\Admin\AppData\Local\Temp\b6b855bda533fefd81c9a7ca8929e52b1b79be7b5e4c4d9fb494392a2c4d8db3.exe"
1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4576
- C:\ProgramData\Decoder.exe
  "C:\ProgramData\Decoder.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:548
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 1 /tn "Windows Services" /tr "\systems32_bit\systems32.exe" /f
    3⤵
    - Creates scheduled task(s)
    PID:4896
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\.cmd""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:176
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4
    3⤵
    - Delays execution with timeout.exe
    PID:2248
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3D76.tmp.cmd""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4208
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4
    3⤵
    - Delays execution with timeout.exe
    PID:2016

C:\systems32_bit\systems32.exe
\systems32_bit\systems32.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:26520
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 1 /tn "Windows Services" /tr "\systems32_bit\systems32.exe" /f
  2⤵
  - Creates scheduled task(s)
  PID:27344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

Decoder.exe

Path C:\ProgramData\Decoder.exe
Size 39KB
SHA256 52773fccbe6883ca7465ffe857c3fe7193521f0807bd8462f95bd4ad73be9867
MD5 e753a9a4c3a393d9eccc31e5c6aded66
SHA1 5501ae71598925711dbee54f6ee1c827dd01d845
SHA512 ee03d79cd24db07c3466cc602a657c9eb33119267b591a64a0d9215e3a80a24e3c435275ccfb5ffd7356def5bf717c5f2d8bc9a5b2daf1950ecf951b5e614c2e
SSDEEP 768:zNEjLFev8VAD/g3hEQ+6y6WIn5XybNdF:eDVADYb+6yFGCbNdF
MD5 SHA1 SHA512 SSDEEP

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Decoder.exe

Path C:\ProgramData\Decoder.exe
Size 39KB
SHA256 52773fccbe6883ca7465ffe857c3fe7193521f0807bd8462f95bd4ad73be9867
MD5 e753a9a4c3a393d9eccc31e5c6aded66
SHA1 5501ae71598925711dbee54f6ee1c827dd01d845
SHA512 ee03d79cd24db07c3466cc602a657c9eb33119267b591a64a0d9215e3a80a24e3c435275ccfb5ffd7356def5bf717c5f2d8bc9a5b2daf1950ecf951b5e614c2e
SSDEEP 768:zNEjLFev8VAD/g3hEQ+6y6WIn5XybNdF:eDVADYb+6yFGCbNdF
MD5 SHA1 SHA512 SSDEEP

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.cmd

Path C:\Users\Admin\AppData\Local\Temp\.cmd
Size 85B
SHA256 8bd49d7e7e6b2c2dc16a4cb0eebb8f28892775fad56c9e4aaa22d59f01883cd0
MD5 73712247036b6a24d16502c57a3e5679
SHA1 65ca9edadb0773fc34db7dfefe9e6416f1ac17fa
SHA512 548eef10b0118f7d907fa19c12de68b47278afffb3eb9460621efb2b711ebcf6b90d0ea1c077fc480e032bf241fb3f8cc995ec1373e301446f89f1a74a6309de
MD5 SHA1 SHA512

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tmp3D76.tmp.cmd

Path C:\Users\Admin\AppData\Local\Temp\tmp3D76.tmp.cmd
Size 131B
SHA256 373dac231d9214f27f6ca133e3f03d75a384d207dc12869feac3771ab981505a
MD5 4fb4a80941d5a8acdd721ff333023939
SHA1 c5cae850eba266c87f7cd32f39572a3d024ebbcd
SHA512 6f22d3724456be03f7021bc4fcf2bbf1a855fba19309aee514f6f293669a24437698fc014594babf58469dfe95ac06eec15fcd265a43746c299bd7299a16c9d4
MD5 SHA1 SHA512

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systems32.exe

Path C:\systems32_bit\systems32.exe
Size 39KB
SHA256 52773fccbe6883ca7465ffe857c3fe7193521f0807bd8462f95bd4ad73be9867
MD5 e753a9a4c3a393d9eccc31e5c6aded66
SHA1 5501ae71598925711dbee54f6ee1c827dd01d845
SHA512 ee03d79cd24db07c3466cc602a657c9eb33119267b591a64a0d9215e3a80a24e3c435275ccfb5ffd7356def5bf717c5f2d8bc9a5b2daf1950ecf951b5e614c2e
SSDEEP 768:zNEjLFev8VAD/g3hEQ+6y6WIn5XybNdF:eDVADYb+6yFGCbNdF
MD5 SHA1 SHA512 SSDEEP

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systems32.exe

Path C:\systems32_bit\systems32.exe
Size 39KB
SHA256 52773fccbe6883ca7465ffe857c3fe7193521f0807bd8462f95bd4ad73be9867
MD5 e753a9a4c3a393d9eccc31e5c6aded66
SHA1 5501ae71598925711dbee54f6ee1c827dd01d845
SHA512 ee03d79cd24db07c3466cc602a657c9eb33119267b591a64a0d9215e3a80a24e3c435275ccfb5ffd7356def5bf717c5f2d8bc9a5b2daf1950ecf951b5e614c2e
SSDEEP 768:zNEjLFev8VAD/g3hEQ+6y6WIn5XybNdF:eDVADYb+6yFGCbNdF
MD5 SHA1 SHA512 SSDEEP

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memory/548-145-0x00007FFABC440000-0x00007FFABCF01000-memory.dmp

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memory/548-139-0x00000000004C0000-0x00000000004D0000-memory.dmp

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memory/4576-134-0x00000000080F0000-0x0000000008694000-memory.dmp

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memory/4576-133-0x0000000007AA0000-0x0000000007B32000-memory.dmp

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memory/4576-130-0x0000000000F60000-0x00000000013AE000-memory.dmp

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memory/4576-132-0x0000000007760000-0x00000000077FC000-memory.dmp

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memory/4576-131-0x00000000062F0000-0x0000000006356000-memory.dmp

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memory/26520-150-0x00007FFABC440000-0x00007FFABCF01000-memory.dmp

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