oski | 8b0ac881b039733c573ab30cf037e0ce3d6f2981c0eb2342902b91ecf891adff

General

Target

SKBM-120821.exe
Size

732KB
MD5

807a927252237ee6436724cbbcd05fa0
SHA1

2344ad154e7d098704278cd5e28fccd29a9dec15
SHA256

a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
SHA512

7f0bba03bd838900569e63bdab43e7caa3a1ab2d6744fcb9c38e7ca8914fcf31323b3db5d1ed2efdef1b5b5326f980c8712faef53ca6966c42318b20fd4bd541
SSDEEP

12288:SPqqPtYaerpyXOSs1vJhzl7txF3gSEyI32u6Yaer:wMrpW6vfl7hpE7mmr

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

C2

zau.divendesign.in

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2176 set thread context of 2420	2176	SKBM-120821.exe	30

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
2408	2420	WerFault.exe	30

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
2260	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2176	SKBM-120821.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	SKBM-120821.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2260	2176	SKBM-120821.exe	28
PID 2176 wrote to memory of 2260	2176	SKBM-120821.exe	28
PID 2176 wrote to memory of 2260	2176	SKBM-120821.exe	28
PID 2176 wrote to memory of 2260	2176	SKBM-120821.exe	28
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2176 wrote to memory of 2420	2176	SKBM-120821.exe	30
PID 2420 wrote to memory of 2408	2420	SKBM-120821.exe	31
PID 2420 wrote to memory of 2408	2420	SKBM-120821.exe	31
PID 2420 wrote to memory of 2408	2420	SKBM-120821.exe	31
PID 2420 wrote to memory of 2408	2420	SKBM-120821.exe	31

C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6D8.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2260
- C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
  "{path}"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2420
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2420 -s 112
    3⤵
    - Program crash
    PID:2408

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

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC6D8.tmp

Filesize
1KB

MD5
dc997eccbf233ce4494baa204211c389

SHA1
66a86a2e34e68214faa68926f888fdee447dc951

SHA256
46893f6b7ad046a5ff41d2ba1c208314bfc1b5a52e55289e91f12aa7cf657fe7

SHA512
1b25d03350961170d8455c5556e7c8a5408dba748902038630b6760917daa0b71a5d8768a3796d1d2ae0ebb8aa7e6841a4ea21c047e248fe93ffdf7bc3d1b3d6

Download Submit
memory/2176-4-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2176-5-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

Filesize
256KB

Download
memory/2176-22-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2176-1-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2176-0-0x0000000001180000-0x000000000123C000-memory.dmp

Filesize
752KB

Download
memory/2176-6-0x0000000005130000-0x00000000051B2000-memory.dmp

Filesize
520KB

Download
memory/2176-7-0x0000000000B90000-0x0000000000BCC000-memory.dmp

Filesize
240KB

Download
memory/2176-2-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

Filesize
256KB

Download
memory/2176-3-0x0000000000440000-0x0000000000448000-memory.dmp

Filesize
32KB

Download
memory/2420-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2420-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2420-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads