oski | 44aa270e4c081241057bad8c1d0ea5864087325f8e3209aa10747f108123f718

General

Target

452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe
Size

792KB
MD5

452e6c334e555629c538c4aa6b2adc26
SHA1

f24a31707b2b0037adcc712b0d83541074f909d2
SHA256

44aa270e4c081241057bad8c1d0ea5864087325f8e3209aa10747f108123f718
SHA512

1412c3682f9c0e239743450d7ce86b37e726101f5f1786fe215dfd18c61911f31f13533549c3af2033ce6dbf47dc638466283dca62fd8df062ea2a65e3fd811a
SSDEEP

12288:YcaQxt8LiULbgDPwFVt2NjFhslyAz1+LC6oSU4Acp82cz8/mNMgMRyLcvyQQGSI:NGb0wFVMNjTsl9zwLCZGAa8mqaQeW

Score

10^/10

oski discovery infostealer

Malware Config

Extracted

Family

oski

C2

185.212.131.198/ww/

Signatures

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

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

Processes:

452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4808 set thread context of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105

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 3 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:

452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exeschtasks.exe452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
1420	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4808 wrote to memory of 1420	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	103
PID 4808 wrote to memory of 1420	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	103
PID 4808 wrote to memory of 1420	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	103
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105
PID 4808 wrote to memory of 4456	4808	452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe	105

C:\Users\Admin\AppData\Local\Temp\452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BqppCjWADhQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCBA8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1420
- C:\Users\Admin\AppData\Local\Temp\452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\452e6c334e555629c538c4aa6b2adc26_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCBA8.tmp

Filesize
1KB

MD5
0e0bbd1e270853ca1e19e238872e2715

SHA1
3c8def73d36c17ce6a6ee868d3c6db363aa0b8cd

SHA256
3bd2dcbc60952be56a3952e76ebe817a11b1d179e21c6cccf990a841e65cc3af

SHA512
ea87589a22060450f532ed0073eb84c14f18fdcdcd6a75e4974f93183430c26f9b671b66e75a33ab8b5c0944ece28d01b10b662e597bede44c3f4a376cccbabf

Download Submit
memory/4456-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4456-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4456-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4456-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4456-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4808-5-0x0000000004E70000-0x0000000004E7A000-memory.dmp

Filesize
40KB

Download
memory/4808-6-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/4808-8-0x00000000053D0000-0x00000000053EA000-memory.dmp

Filesize
104KB

Download
memory/4808-9-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/4808-10-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/4808-11-0x0000000007F20000-0x0000000007FB8000-memory.dmp

Filesize
608KB

Download
memory/4808-12-0x000000000A6A0000-0x000000000A6D8000-memory.dmp

Filesize
224KB

Download
memory/4808-7-0x0000000005070000-0x00000000050C6000-memory.dmp

Filesize
344KB

Download
memory/4808-0-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/4808-4-0x0000000004EE0000-0x0000000004F72000-memory.dmp

Filesize
584KB

Download
memory/4808-3-0x00000000053F0000-0x0000000005994000-memory.dmp

Filesize
5.6MB

Download
memory/4808-2-0x0000000004D50000-0x0000000004DEC000-memory.dmp

Filesize
624KB

Download
memory/4808-23-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/4808-1-0x0000000000330000-0x00000000003FC000-memory.dmp

Filesize
816KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads