oski | adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610

General

Target

adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe
Size

502KB
MD5

ab5be0d669ea17b096b0ab7f70c46d31
SHA1

c0baca7a79c5acbe9b1a326539798599308ad94b
SHA256

adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610
SHA512

81362639d5e390577403e299df111017ca0246092234c3bdb40968b9cab0ff4ddfaab51c2ed75d253dfd718c682da216ff4d544b828b102b8f94f297e3e55d42

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

C2

serhuwadwtr.xyz

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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 940 set thread context of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
260	1588	WerFault.exe	86

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

T1053

pid	Process
4968	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe
940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe
940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe
940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 4968	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	84
PID 940 wrote to memory of 4968	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	84
PID 940 wrote to memory of 4968	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	84
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86
PID 940 wrote to memory of 1588	940	adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe	86

C:\Users\Admin\AppData\Local\Temp\adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe
"C:\Users\Admin\AppData\Local\Temp\adddf3a8edacd49f26632d6e2db61c77c1e4f52a0f3ef042528f15eba7aab610.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:940
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NpBKSSqrmfw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp49EA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4968
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:1588
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1588 -s 1292
    3⤵
    - Program crash
    PID:260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1588 -ip 1588
1⤵
PID:3836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp49EA.tmp

Filesize
1KB

MD5
79a2d4b1d22b2be337f4832132aabfc8

SHA1
33a891691bbbca248c6df4ac5bee5130b801eb3f

SHA256
ddbf6f656b6f5e01396d9356a1a58df15dad6ec058908d73898944f594ada88a

SHA512
2c921058a1c905952774988b9d147367a3a1adefc194b0251b2b981fd08258b254dcc619faf8b5b813b737837010179a982f7620f5905fe871e41b4eea7f58fa

Download Submit
memory/940-131-0x0000000005EE0000-0x0000000006484000-memory.dmp

Filesize
5.6MB

Download
memory/940-132-0x0000000005AD0000-0x0000000005B62000-memory.dmp

Filesize
584KB

Download
memory/940-133-0x0000000005C70000-0x0000000005C7A000-memory.dmp

Filesize
40KB

Download
memory/940-134-0x0000000005D70000-0x0000000005DD6000-memory.dmp

Filesize
408KB

Download
memory/940-135-0x0000000007530000-0x00000000075CC000-memory.dmp

Filesize
624KB

Download
memory/940-130-0x0000000000AE0000-0x0000000000B68000-memory.dmp

Filesize
544KB

Download
memory/1588-139-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1588-140-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1588-141-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1588-142-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1588-143-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads