stealc | faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf

Analysis

max time kernel
150s
max time network
157s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
05/04/2024, 18:00

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General

Target
faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf.exe
Size 377KB
Sample240405-wlc17sae31
SHA256 faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf
MD5 8fa5cc9d38655cc152eb826e1b5bc913
SHA1 fa1ff7e87c972ff94b27f9be0026a3235048d1b5
SHA512 a065d471cb24a39be09f2a6e384f147e2c8bbd7ef3553f68f2b38cd32d7680eb6715672158ecb42522d7cc30841ed8d07caf454df0e81d58935da0221954067e
SSDEEP 6144:KMSl8andYjkGnrbYOq7z4U0mlUpQ51EFs0sLM2/yy5JQxT/DyP:KTl8YdYI+rb+7z7UpQ570sL9Jq/DyP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.209

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
1008	u3io.0.exe
416	EGHJKJKKJD.exe

Loads dropped DLL 2 IoCs

pid	Process
1008	u3io.0.exe
1008	u3io.0.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2724	4560	WerFault.exe	78
1720	1008	WerFault.exe	79

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u3io.0.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u3io.0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3028	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1008	u3io.0.exe
1008	u3io.0.exe
1008	u3io.0.exe
1008	u3io.0.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 1008	4560	faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf.exe	79
PID 4560 wrote to memory of 1008	4560	faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf.exe	79
PID 4560 wrote to memory of 1008	4560	faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf.exe	79
PID 1008 wrote to memory of 4824	1008	u3io.0.exe	85
PID 1008 wrote to memory of 4824	1008	u3io.0.exe	85
PID 1008 wrote to memory of 4824	1008	u3io.0.exe	85
PID 4824 wrote to memory of 416	4824	cmd.exe	89
PID 4824 wrote to memory of 416	4824	cmd.exe	89
PID 4824 wrote to memory of 416	4824	cmd.exe	89
PID 416 wrote to memory of 2152	416	EGHJKJKKJD.exe	90
PID 416 wrote to memory of 2152	416	EGHJKJKKJD.exe	90
PID 416 wrote to memory of 2152	416	EGHJKJKKJD.exe	90
PID 2152 wrote to memory of 3028	2152	cmd.exe	92
PID 2152 wrote to memory of 3028	2152	cmd.exe	92
PID 2152 wrote to memory of 3028	2152	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf.exe
"C:\Users\Admin\AppData\Local\Temp\faade33cb06d94a573e60ffbb941b525d2e1c093630023bd53278a31c9a84bbf.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Users\Admin\AppData\Local\Temp\u3io.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u3io.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1008
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\EGHJKJKKJD.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4824
  - - C:\Users\Admin\AppData\Local\Temp\EGHJKJKKJD.exe
      "C:\Users\Admin\AppData\Local\Temp\EGHJKJKKJD.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:416
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\EGHJKJKKJD.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2152
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:3028
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1008 -s 2548
    3⤵
    - Program crash
    PID:1720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 1156
  2⤵
  - Program crash
  PID:2724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4560 -ip 4560
1⤵
PID:892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1008 -ip 1008
1⤵
PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Are.docx

Path C:\ProgramData\Are.docx
Size 11KB
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b
SSDEEP 192:CtNCEE33S7Ok0CMSYbcBVk6tqM16iPBkeawLWdxd7o3Lp:aNwC78uYbcBv6akwLWdxdE3Lp
MD5 SHA1 SHA512 SSDEEP

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mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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EGHJKJKKJD.exe

Path C:\Users\Admin\AppData\Local\Temp\EGHJKJKKJD.exe
Size 106KB
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c
SSDEEP 1536:lIpbrxKOcuS11Phbiyn2TCdfGyJVGJkyrt517EwM+UPpe5xKOcuS11Phbiyn2TCf:KpbrsISnRGPJkGt74GsISnRF
MD5 SHA1 SHA512 SSDEEP

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u3io.0.exe

Path C:\Users\Admin\AppData\Local\Temp\u3io.0.exe
Size 235KB
SHA256 cf339eace62da3428cfbd25b53b44a6a96f5aac74d0f8d6d44b3732c1fdf3e9e
MD5 48f1739aab9afeeedb708635efaaae08
SHA1 f1ff3ba5fddb1c3494998633fb0861f560233aa5
SHA512 bba327066690d1ab759c9b9b428561a6ca3b82ef981904311d00ee6cfe34f64d1942a1ce842d3e0e3f43db2cc4b9e8cb29a5ca039178fc1d75383ca9f305510f
SSDEEP 3072:blt71C9K4hb9BZ4l1oHXP+GZiXhV+kNZo5sVzzrN/a2xqpY7juUB9nvjPsgTu:r1wnhRBZU+1kKronNSiP1nvjPsgT
MD5 SHA1 SHA512 SSDEEP

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memory/416-118-0x0000000071A10000-0x00000000721C1000-memory.dmp

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memory/416-115-0x0000000005830000-0x0000000005840000-memory.dmp

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memory/416-112-0x0000000071A10000-0x00000000721C1000-memory.dmp

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memory/416-111-0x0000000000E80000-0x0000000000EA0000-memory.dmp

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memory/1008-15-0x0000000000400000-0x0000000000857000-memory.dmp

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memory/1008-107-0x0000000000400000-0x0000000000857000-memory.dmp

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memory/1008-17-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/1008-113-0x0000000000400000-0x0000000000857000-memory.dmp

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memory/1008-13-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

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memory/1008-14-0x0000000002580000-0x00000000025A7000-memory.dmp

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memory/1008-101-0x0000000000400000-0x0000000000857000-memory.dmp

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memory/1008-74-0x0000000000400000-0x0000000000857000-memory.dmp

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memory/1008-106-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

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memory/4560-105-0x0000000000400000-0x000000000087B000-memory.dmp

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memory/4560-1-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

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memory/4560-100-0x0000000002700000-0x000000000276C000-memory.dmp

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memory/4560-99-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

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memory/4560-16-0x0000000000400000-0x000000000087B000-memory.dmp

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memory/4560-3-0x0000000000400000-0x000000000087B000-memory.dmp

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memory/4560-2-0x0000000002700000-0x000000000276C000-memory.dmp

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