oski | fc20db6fb74a2d4bf69f5035690a553ac349ddebdf87eb417a587d0ffb272d01

General

Target

moto hr.bin.exe
Size

249KB
MD5

116deb673468e1ac1cb77fe490ee1d81
SHA1

d5ba419a4300b73b6aa3c725c33c8e083675f403
SHA256

fc20db6fb74a2d4bf69f5035690a553ac349ddebdf87eb417a587d0ffb272d01
SHA512

7ceded6d75afb547c4f82b071f0096a393fdf27771c47ea8d3fb2e739aac570cbff579b54323e2d8ac1d450b8c1093f0e225b5e56fd3704041253e829e1225fb

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

45.144.225.118

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Downloads MZ/PE file
Loads dropped DLL 4 IoCs

Processes:

moto hr.bin.exemoto hr.bin.exe

pid process

908 moto hr.bin.exe
488 moto hr.bin.exe
488 moto hr.bin.exe
488 moto hr.bin.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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of SetThreadContext 1 IoCs

Processes:

moto hr.bin.exe

description pid process target process

PID 908 set thread context of 488 908 moto hr.bin.exe moto hr.bin.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

moto hr.bin.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString moto hr.bin.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3136 taskkill.exe
NTFS ADS 1 IoCs

Processes:

moto hr.bin.exe

description ioc process

File created C:\ProgramData\433382630812.exe:Zone.Identifier moto hr.bin.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

moto hr.bin.exe

pid process

908 moto hr.bin.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3136 taskkill.exe

pid	process
908	moto hr.bin.exe
488	moto hr.bin.exe
488	moto hr.bin.exe
488	moto hr.bin.exe

description	pid	process	target process
PID 908 set thread context of 488	908	moto hr.bin.exe	moto hr.bin.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	moto hr.bin.exe

pid	process
3136	taskkill.exe

description	ioc	process
File created	C:\ProgramData\433382630812.exe:Zone.Identifier	moto hr.bin.exe

pid	process
908	moto hr.bin.exe

description	pid	process
Token: SeDebugPrivilege	3136	taskkill.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

moto hr.bin.exemoto hr.bin.execmd.exe

description	pid	process	target process
PID 908 wrote to memory of 488	908	moto hr.bin.exe	moto hr.bin.exe
PID 908 wrote to memory of 488	908	moto hr.bin.exe	moto hr.bin.exe
PID 908 wrote to memory of 488	908	moto hr.bin.exe	moto hr.bin.exe
PID 908 wrote to memory of 488	908	moto hr.bin.exe	moto hr.bin.exe
PID 488 wrote to memory of 1328	488	moto hr.bin.exe	cmd.exe
PID 488 wrote to memory of 1328	488	moto hr.bin.exe	cmd.exe
PID 488 wrote to memory of 1328	488	moto hr.bin.exe	cmd.exe
PID 1328 wrote to memory of 3136	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 3136	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 3136	1328	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\moto hr.bin.exe
"C:\Users\Admin\AppData\Local\Temp\moto hr.bin.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:908

C:\Users\Admin\AppData\Local\Temp\moto hr.bin.exe
"C:\Users\Admin\AppData\Local\Temp\moto hr.bin.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:488

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /pid 488 & erase C:\Users\Admin\AppData\Local\Temp\moto hr.bin.exe & RD /S /Q C:\\ProgramData\\062633701565848\\* & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1328

C:\Windows\SysWOW64\taskkill.exe
taskkill /pid 488
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3136

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\ProgramData\sqlite3.dll
MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

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\Users\Admin\AppData\Local\Temp\nss9AD0.tmp\395kjb2d0vsv8.dll
MD5
a1f4d1d8095628dc778383d0c3357cfa

SHA1
2932b8c56156d281d918918647fce04e9ae5caab

SHA256
2f1dd45660735377cd8d8bf5c8a184868e6fb536c03c170744e7e96fe8a2215e

SHA512
5f95ca74d71ada0c4c42d741ccb2d51236193691d84a3a9359811b974d6c11218a784569ef4b76f0495782b08b9145cc353ba5cc7bf88128ad3f677abf05c650

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memory/488-115-0x000000000040717B-mapping.dmp

Download
memory/488-118-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/908-117-0x00000000024B1000-0x00000000024B3000-memory.dmp

Filesize
8KB

Download
memory/908-116-0x00000000024B0000-0x00000000024B1000-memory.dmp

Filesize
4KB

Download
memory/1328-122-0x0000000000000000-mapping.dmp

Download
memory/3136-123-0x0000000000000000-mapping.dmp

Download

Analysis

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