oski | a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f

General

Target

8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe
Size

396KB
MD5

8d97f71457a0a2977a82571583306c26
SHA1

936800c740c13a3fc2e05a1c1376007f58002a7d
SHA256

a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f
SHA512

5708375538d7b9927784809912a0b0588e200aaf62668226b9b83c2c4879306d989bef3033807bd7bb8989a56b58b2369b42327968f23f2dddc6d9b2975c51f5
SSDEEP

12288:7ycqterR53JplKiFwgxtQ9LdQAGAHUq/uzK6UA8t9HHHHHHHHHIHHHHHHczJXNAG:7QtervJXzQ9L

Score

10^/10

oski infostealer persistence spyware stealer

Malware Config

Extracted

Family

oski

C2

forum.daffodil-bd.com

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update Folder\\Windows Update.exe"	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4996 set thread context of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5016	3232	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe
4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe
4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91
PID 4996 wrote to memory of 3232	4996	8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Users\Admin\AppData\Local\Temp\8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\8d97f71457a0a2977a82571583306c26_JaffaCakes118.exe"
  2⤵
  PID:3232
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 964
    3⤵
    - Program crash
    PID:5016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3232 -ip 3232
1⤵
PID:4672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\msvcp140.dll

Filesize
9KB

MD5
081c82c6dd70c98891b833f1f45bae10

SHA1
44e08fbc6374c124c1f71515447dd779a16c91b5

SHA256
f1d30c9ec33e8ccba931f4fde5cfcbd051a218e3a06370892ee81cad22cee298

SHA512
29124edef11c0bfc03cc9b784c9bff11de713d75499eb8df2487d8e45bbd5251281508bfdfbfac0c628220d2565f3282a45c313683022457beb9a5f4607b9d36

Download Submit
memory/3232-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3232-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3232-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3232-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3232-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4996-3-0x0000000002710000-0x0000000002720000-memory.dmp

Filesize
64KB

Download
memory/4996-5-0x00000000050F0000-0x0000000005182000-memory.dmp

Filesize
584KB

Download
memory/4996-14-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/4996-6-0x0000000005190000-0x000000000522C000-memory.dmp

Filesize
624KB

Download
memory/4996-4-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/4996-1-0x00000000751C0000-0x0000000075970000-memory.dmp

Filesize
7.7MB

Download
memory/4996-8-0x0000000005060000-0x000000000506A000-memory.dmp

Filesize
40KB

Download
memory/4996-2-0x0000000002720000-0x0000000002726000-memory.dmp

Filesize
24KB

Download
memory/4996-0-0x0000000000350000-0x00000000003BC000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads