stealc | ffd786514a3cbc05561a3bf9c23c5e791a6f464a21c27dd5d95579d8188353e1

Analysis

max time kernel
139s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 08:42

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General

Target
tmp.exe
Size 297KB
Sample240404-kl1xgsbb42
SHA256 ffd786514a3cbc05561a3bf9c23c5e791a6f464a21c27dd5d95579d8188353e1
MD5 174dd92af08d3cddb721f8f71e468f77
SHA1 1ab71e80b49dfcdb2f99cb8d795b620a67e80023
SHA512 4342c92825ec4903b2b137bc3585b466e31b98b63fc9e63b6f9da721799bafc36e43bb2e270e9f7c757c08d6836826617300d6a349bbeff6cbe4522ff85d6df0
SSDEEP 3072:Uv+UqTeg8nmIEii0qlVknt6aWLlxAGWSwVeURATr+PMHOKKs6vg33qA:UlqTeg8nml3iY9LzIVe7vkPg33q
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

Checks computer location settings 2 TTPs 2 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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	IDHIIJJJKE.exe
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	tmp.exe

Executes dropped EXE 1 IoCs

pid	Process
4960	IDHIIJJJKE.exe

Loads dropped DLL 2 IoCs

pid	Process
4284	tmp.exe
4284	tmp.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 1 IoCs

pid	pid_target	Process	procid_target
3436	4284	WerFault.exe	93

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	tmp.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2200	PING.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe
4284	tmp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4284 wrote to memory of 2092	4284	tmp.exe	107
PID 4284 wrote to memory of 2092	4284	tmp.exe	107
PID 4284 wrote to memory of 2092	4284	tmp.exe	107
PID 2092 wrote to memory of 4960	2092	cmd.exe	110
PID 2092 wrote to memory of 4960	2092	cmd.exe	110
PID 2092 wrote to memory of 4960	2092	cmd.exe	110
PID 4960 wrote to memory of 1124	4960	IDHIIJJJKE.exe	112
PID 4960 wrote to memory of 1124	4960	IDHIIJJJKE.exe	112
PID 4960 wrote to memory of 1124	4960	IDHIIJJJKE.exe	112
PID 1124 wrote to memory of 2200	1124	cmd.exe	114
PID 1124 wrote to memory of 2200	1124	cmd.exe	114
PID 1124 wrote to memory of 2200	1124	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4284
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\IDHIIJJJKE.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2092
- - C:\Users\Admin\AppData\Local\Temp\IDHIIJJJKE.exe
    "C:\Users\Admin\AppData\Local\Temp\IDHIIJJJKE.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:4960
  - - 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\IDHIIJJJKE.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1124
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4284 -s 2376
  2⤵
  - Program crash
  PID:3436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3780 --field-trial-handle=3536,i,10914981530159316853,12381340356750224673,262144 --variations-seed-version /prefetch:3
1⤵
PID:4172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4284 -ip 4284
1⤵
PID:2672

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3988 --field-trial-handle=3536,i,10914981530159316853,12381340356750224673,262144 --variations-seed-version /prefetch:8
1⤵
PID:4996

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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SCT Auditing Pending Reports

Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
Size 2B
SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
MD5 d751713988987e9331980363e24189ce
SHA1 97d170e1550eee4afc0af065b78cda302a97674c
SHA512 b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af
MD5 SHA1 SHA512

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Sdch Dictionaries

Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
Size 40B
SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
MD5 20d4b8fa017a12a108c87f540836e250
SHA1 1ac617fac131262b6d3ce1f52f5907e31d5f6f00
SHA512 507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856
MD5 SHA1 SHA512

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IDHIIJJJKE.exe

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

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memory/4284-3-0x0000000000400000-0x0000000002B74000-memory.dmp

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memory/4284-1-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

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memory/4284-2-0x0000000002CD0000-0x0000000002CF7000-memory.dmp

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memory/4284-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/4284-64-0x0000000000400000-0x0000000002B74000-memory.dmp

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memory/4284-102-0x0000000000400000-0x0000000002B74000-memory.dmp

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memory/4284-105-0x0000000002CD0000-0x0000000002CF7000-memory.dmp

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memory/4960-98-0x0000000000A30000-0x0000000000A50000-memory.dmp

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memory/4960-99-0x0000000072380000-0x0000000072B30000-memory.dmp

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memory/4960-100-0x00000000054A0000-0x00000000054B0000-memory.dmp

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memory/4960-104-0x0000000072380000-0x0000000072B30000-memory.dmp

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