oski | 1ef805d037a3e6d5667c5f09316d85231d217c452c0759fd16ccd34f75e3c22c

General

Target

753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
Size

694KB
MD5

753f316cffd68bd3c5161c8387a770b4
SHA1

96a99cc3f60aaa86fd951eecdc22d0b6117ccbfa
SHA256

1ef805d037a3e6d5667c5f09316d85231d217c452c0759fd16ccd34f75e3c22c
SHA512

21f3c2ca3f150d0dd51803707b9d0052ec6e2628cd5379f4d632c54ab2b2800a3b390802af097db6e19dc1b0dae279994a2a245c7cc95bfa45b2e8150473af02
SSDEEP

12288:FleNG/r9AP+CpkUoZUpgzMtv/ZAgEXF2/cpurmcYv2tasGHW:+k/ntRKpgotv/6Xl8AutasoW

Score

10^/10

oski credential_access discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

hanxlas.ac.ug

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
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
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

Suspicious use of SetThreadContext 1 IoCs

Processes:

753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

description	pid	process	target process
PID 3156 set thread context of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1524 1792 WerFault.exe 753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
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

Processes:

753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

pid process

3156 753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
3156 753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

description pid process

Token: SeDebugPrivilege 3156 753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

pid	pid_target	process	target process
1524	1792	WerFault.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

pid	process
3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

description	pid	process	target process
PID 3156 wrote to memory of 4624	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 4624	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 4624	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
PID 3156 wrote to memory of 1792	3156	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe	753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Users\Admin\AppData\Local\Temp\753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
  "{path}"
  2⤵
  PID:4624
- C:\Users\Admin\AppData\Local\Temp\753f316cffd68bd3c5161c8387a770b4_JaffaCakes118.exe
  "{path}"
  2⤵
  PID:1792
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 1304
    3⤵
    - Program crash
    PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 1792 -ip 1792
1⤵
PID:1292

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

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1792-11-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1792-19-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1792-15-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1792-14-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1792-12-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3156-4-0x0000000004B30000-0x0000000004B3A000-memory.dmp

Filesize
40KB

Download
memory/3156-6-0x00000000079A0000-0x0000000007A3C000-memory.dmp

Filesize
624KB

Download
memory/3156-7-0x0000000007900000-0x0000000007908000-memory.dmp

Filesize
32KB

Download
memory/3156-8-0x00000000750AE000-0x00000000750AF000-memory.dmp

Filesize
4KB

Download
memory/3156-9-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3156-10-0x0000000007A40000-0x0000000007AD2000-memory.dmp

Filesize
584KB

Download
memory/3156-5-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3156-0-0x00000000750AE000-0x00000000750AF000-memory.dmp

Filesize
4KB

Download
memory/3156-3-0x0000000004B50000-0x0000000004BE2000-memory.dmp

Filesize
584KB

Download
memory/3156-2-0x0000000005060000-0x0000000005604000-memory.dmp

Filesize
5.6MB

Download
memory/3156-16-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1-0x00000000001F0000-0x00000000002A4000-memory.dmp

Filesize
720KB

Download

Analysis

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