oski | a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5

General

Target

807a927252237ee6436724cbbcd05fa0.exe
Size

732KB
MD5

807a927252237ee6436724cbbcd05fa0
SHA1

2344ad154e7d098704278cd5e28fccd29a9dec15
SHA256

a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
SHA512

7f0bba03bd838900569e63bdab43e7caa3a1ab2d6744fcb9c38e7ca8914fcf31323b3db5d1ed2efdef1b5b5326f980c8712faef53ca6966c42318b20fd4bd541
SSDEEP

12288:SPqqPtYaerpyXOSs1vJhzl7txF3gSEyI32u6Yaer:wMrpW6vfl7hpE7mmr

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

zau.divendesign.in

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	807a927252237ee6436724cbbcd05fa0.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4160 set thread context of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1616	5092	WerFault.exe	95

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
456	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4160	807a927252237ee6436724cbbcd05fa0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4160	807a927252237ee6436724cbbcd05fa0.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4160 wrote to memory of 456	4160	807a927252237ee6436724cbbcd05fa0.exe	94
PID 4160 wrote to memory of 456	4160	807a927252237ee6436724cbbcd05fa0.exe	94
PID 4160 wrote to memory of 456	4160	807a927252237ee6436724cbbcd05fa0.exe	94
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95
PID 4160 wrote to memory of 5092	4160	807a927252237ee6436724cbbcd05fa0.exe	95

C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
"C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4160
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB6E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:456
- C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
  "{path}"
  2⤵
  PID:5092
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 1312
    3⤵
    - Program crash
    PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5092 -ip 5092
1⤵
PID:4508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCB6E.tmp

Filesize
1KB

MD5
fd82f54536607ad7911da8877b3748da

SHA1
325f1ebe80bc0cd494fef898f226e3cac5873ff0

SHA256
dd9eaa611535ca5fcb246dfd94214fc34c3fd13be6616ab5e44ed4762c3514c0

SHA512
fc6ae634c296f64505713dc7a049b0969d1205504c04dffebfe135a55d3429331e798703309a5f1a0cb5609b4cc19ce6eae575c38d7d2d89cf60bcd6f71df870

Download Submit
memory/4160-8-0x0000000005C80000-0x0000000005D02000-memory.dmp

Filesize
520KB

Download
memory/4160-7-0x00000000052D0000-0x00000000052E0000-memory.dmp

Filesize
64KB

Download
memory/4160-4-0x0000000005450000-0x00000000054EC000-memory.dmp

Filesize
624KB

Download
memory/4160-5-0x00000000054F0000-0x0000000005582000-memory.dmp

Filesize
584KB

Download
memory/4160-9-0x0000000005B40000-0x0000000005B7C000-memory.dmp

Filesize
240KB

Download
memory/4160-6-0x0000000074BA0000-0x0000000075350000-memory.dmp

Filesize
7.7MB

Download
memory/4160-2-0x00000000052D0000-0x00000000052E0000-memory.dmp

Filesize
64KB

Download
memory/4160-0-0x00000000007D0000-0x000000000088C000-memory.dmp

Filesize
752KB

Download
memory/4160-3-0x0000000002D80000-0x0000000002D88000-memory.dmp

Filesize
32KB

Download
memory/4160-1-0x0000000074BA0000-0x0000000075350000-memory.dmp

Filesize
7.7MB

Download
memory/4160-18-0x0000000074BA0000-0x0000000075350000-memory.dmp

Filesize
7.7MB

Download
memory/5092-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5092-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5092-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5092-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5092-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads