stealc | b7dee59b78126ab03b18c571b7045e2c6b146062270463d150cbe82ad86f2947

General

Target

b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
Size

203KB
MD5

60de9c3b301760961bf1664166ef0899
SHA1

baa84500caf3d32d99fea3e34c7f1d4ccecbf0a3
SHA256

b7dee59b78126ab03b18c571b7045e2c6b146062270463d150cbe82ad86f2947
SHA512

15c74ad5cbb775c22d487e0db7cb0d9857fbe1ef7c52870cb291d63e59872e2fa5dac61b73b6c96ec9f037cd7dc16424f1c46a52ff32a0bb3113ed32c4bfe737
SSDEEP

3072:P3w5UJlGMHmApaf6MCTQOjenfCvV3WX7n1PD52Rb6ORB:P3w5U3psfMTQ8xvVGX7n1PYl6OR

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.76

Attributes

url_path
/8681490a59ad0e34.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

pid process

3652 b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652 b7dee59b78126ab03b18c571b7045e2c6b14606227046.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

Processes:

WerFault.exe

pid pid_target process target process

1996 3652 WerFault.exe b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

pid	pid_target	process	target process
1996	3652	WerFault.exe	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

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

Processes:

b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

pid	process
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
3652	b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe

C:\Users\Admin\AppData\Local\Temp\b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe
"C:\Users\Admin\AppData\Local\Temp\b7dee59b78126ab03b18c571b7045e2c6b14606227046.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 2408
2⤵
- Program crash
PID:1996

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=1340 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:3
1⤵
PID:3692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3652 -ip 3652
1⤵
PID:4532

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=3280 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:4428

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\ProgramData\Are.docx
Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll
Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll
Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
Filesize
2B

MD5
d751713988987e9331980363e24189ce

SHA1
97d170e1550eee4afc0af065b78cda302a97674c

SHA256
4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

SHA512
b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
Filesize
40B

MD5
20d4b8fa017a12a108c87f540836e250

SHA1
1ac617fac131262b6d3ce1f52f5907e31d5f6f00

SHA256
6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

SHA512
507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

Download Submit
memory/3652-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3652-4-0x0000000000400000-0x0000000002AF0000-memory.dmp

Filesize
38.9MB

Download
memory/3652-3-0x0000000000400000-0x0000000002AF0000-memory.dmp

Filesize
38.9MB

Download
memory/3652-82-0x0000000000400000-0x0000000002AF0000-memory.dmp

Filesize
38.9MB

Download
memory/3652-2-0x0000000002C80000-0x0000000002CA7000-memory.dmp

Filesize
156KB

Download
memory/3652-1-0x0000000002D10000-0x0000000002E10000-memory.dmp

Filesize
1024KB

Download
memory/3652-101-0x0000000002D10000-0x0000000002E10000-memory.dmp

Filesize
1024KB

Download
memory/3652-103-0x0000000002C80000-0x0000000002CA7000-memory.dmp

Filesize
156KB

Download
memory/3652-102-0x0000000000400000-0x0000000002AF0000-memory.dmp

Filesize
38.9MB

Download

Analysis

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