sharpstealer | a67d7bad3484883985727a2dcb0d586104ba10c3eed594a878c2fb1f8db92536

General

Target

External.exe
Size

4.1MB
MD5

7b9641ed9ec61b9373a59bf5a2f03d72
SHA1

68b9c7560f8c2a907fb7b917fce027a206084550
SHA256

a67d7bad3484883985727a2dcb0d586104ba10c3eed594a878c2fb1f8db92536
SHA512

74cbae4d841f5749013b01324e3ccc2920686de5da3107e2c42604afafcd038acfb53837b0433d2f160201d68910a103f6abe6dfe5d21becf3fcd594734dc59e
SSDEEP

98304:DjQw068KkM3pcPuOI66CF+EVeeVlRi0Du4Cs:1kY6Pbpt+ETlRDu4Cs

Score

10^/10

sharpstealer credential_access discovery spyware stealer

Malware Config

Extracted

Family

sharpstealer

C2

https://api.telegram.org/bot7401113895:AAFvlwi14CnG7Kh8lb6sl-p8Z2vBNorD6Pw/sendMessage?chat_id=1171093658

Attributes

max_exfil_filesize
1.5e+06
proxy_port
168.235.103.57:3128
vime_world
false

aes.plain

Signatures

Sharp Stealer
Sharp Stealer is an infostealer first observed in 2024, based on Echelon and Umbral stealers.
stealer sharpstealer
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Executes dropped EXE 1 IoCs

pid	Process
2432	windows.exe

Loads dropped DLL 1 IoCs

pid	Process
2168	External.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
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 4 IoCs

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

flow	ioc
4	api.ipify.org
5	api.ipify.org
6	freegeoip.app
7	freegeoip.app

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	External.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2432	windows.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	windows.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2432	2168	External.exe	30
PID 2168 wrote to memory of 2432	2168	External.exe	30
PID 2168 wrote to memory of 2432	2168	External.exe	30
PID 2168 wrote to memory of 2432	2168	External.exe	30
PID 2432 wrote to memory of 2960	2432	windows.exe	31
PID 2432 wrote to memory of 2960	2432	windows.exe	31
PID 2432 wrote to memory of 2960	2432	windows.exe	31

C:\Users\Admin\AppData\Local\Temp\External.exe
"C:\Users\Admin\AppData\Local\Temp\External.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Users\Admin\AppData\Local\Temp\windows.exe
  "C:\Users\Admin\AppData\Local\Temp\windows.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2432 -s 1496
    3⤵
    PID:2960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Browser Information Discovery

1

T1217

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Newtonsoft.Json.dll

Filesize
695KB

MD5
195ffb7167db3219b217c4fd439eedd6

SHA1
1e76e6099570ede620b76ed47cf8d03a936d49f8

SHA256
e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d

SHA512
56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

Download Submit
\Users\Admin\AppData\Local\Temp\windows.exe

Filesize
396KB

MD5
cfcf2df87dd10edff1e1b2be2e811236

SHA1
82ffe1f1b75efdd5215d7cbefb116f778e0f3864

SHA256
e49bf534ec416f57a546fc1cb0600ec1a441fba576fd1c6212d38090e5dacbe8

SHA512
e5807f901b884c71668deaebc042f1a9bd4335aa3e41258023a8d9e8d5559be454dfa6f1b71afef1d9bfc1c8e8f27628dc9375ec29559377566c845f6bfea2f8

Download Submit
memory/2432-15-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/2432-16-0x0000000000190000-0x00000000001FA000-memory.dmp

Filesize
424KB

Download
memory/2432-23-0x000000001B890000-0x000000001B942000-memory.dmp

Filesize
712KB

Download
memory/2432-45-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing