oski | 2e77a1b324229a10ce5ac15a916526eff4a1e44c291bb918d6ed5329bc56f81b

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2024 05:57

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General

Target

2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe
Size

200KB
MD5

8c36f8a010e9781bda4076852efb05a7
SHA1

155d37c5d7cfda081a74080dc288a80c7ecdc643
SHA256

2e77a1b324229a10ce5ac15a916526eff4a1e44c291bb918d6ed5329bc56f81b
SHA512

5712cc4f13ab99173aae0708bf94961762625dbc78d8f77c54688c7acccd01b7117cd7f2a36120d3ae832b4f82582773b1cb00713481cd90e1944ffd6a2f8f8c
SSDEEP

3072:WfUomEuYm98dlSq7gt5q7Dx+XgS6aCEwhOfUbCalNT2pbB3fIr1Xi6FLPo3c:WfUauY68uSWCx+XA7mg2pNS1Ljo3c

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Downloads MZ/PE file

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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe

Loads dropped DLL 3 IoCs

pid	Process
3164	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe
3164	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe
3164	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.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
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2536	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 2928	3164	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe	110
PID 3164 wrote to memory of 2928	3164	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe	110
PID 3164 wrote to memory of 2928	3164	2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe	110
PID 2928 wrote to memory of 2536	2928	cmd.exe	112
PID 2928 wrote to memory of 2536	2928	cmd.exe	112
PID 2928 wrote to memory of 2536	2928	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /pid 3164 & erase C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_ka & RD /S /Q C:\\ProgramData\\488918262702508\\* & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /pid 3164
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\mozglue.dll

Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll

Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
C:\ProgramData\sqlite3.dll

Filesize
125KB

MD5
cb3e4e15851562e13ba20fc2932997c2

SHA1
1e604837c5523e571c1856ba751e14bbf3253993

SHA256
dc2344436f412ca619f210758b8acd93e2d4e7f6cc79ec744b2e418d0de23175

SHA512
2c5cf6d03e37153083296dbee09f0b74108d80661d364592fcb96fd146536722cb36c17045106b70d38c26f74a84447969db467119141c376421772377f08d56

Download Submit
memory/3164-11-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads