erbium | ef41251a07fff8f963c31cd23674eeb13871a2ac66d279e0bbacd1412473f3ba

Analysis

max time kernel
150s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
05/11/2022, 19:48

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General

Target

Setup1.3/Setup.exe
Size

219KB
MD5

6aad758680ee8382509078b8d3313b23
SHA1

9663d3386c557637864082ff3572de53acc223b0
SHA256

46fb066036bdb30458f53f50dae74071ca3c92d3b5b80af2c2033514691a820e
SHA512

4d021e3880f183990213346f62dbae75cfd42e22cbe86d99d715b6f2dac5224bbc74626ee5707bb70c8b19f64f843ac8a0b0bfefbf3265a72086af6a572ec1dd
SSDEEP

6144:s71Yq5f9cbMee66SCwfYXbyLuBzMAOu0CExi:s71Yw9cbMee667LMcbEx

Score

10^/10

erbium stealer

Malware Config

Extracted

Family

erbium

http://77.73.133.53/cloud/index.php

Signatures

Erbium
Erbium is an infostealer written in C++ and first seen in July 2022.
stealer erbium
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
98032	qsasgjmwhsonrfzd.exe
4580	svcupdater.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3708 set thread context of 97948	3708	Setup.exe	81

Program crash 1 IoCs

pid	pid_target	Process	procid_target
98072	3708	WerFault.exe	79

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

T1053

pid	Process
98064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
97948	AppLaunch.exe
97948	AppLaunch.exe
98032	qsasgjmwhsonrfzd.exe
98032	qsasgjmwhsonrfzd.exe
98032	qsasgjmwhsonrfzd.exe
98032	qsasgjmwhsonrfzd.exe
98032	qsasgjmwhsonrfzd.exe
98032	qsasgjmwhsonrfzd.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe
4580	svcupdater.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	98032	qsasgjmwhsonrfzd.exe
Token: SeDebugPrivilege	4580	svcupdater.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 97948	3708	Setup.exe	81
PID 3708 wrote to memory of 97948	3708	Setup.exe	81
PID 3708 wrote to memory of 97948	3708	Setup.exe	81
PID 3708 wrote to memory of 97948	3708	Setup.exe	81
PID 3708 wrote to memory of 97948	3708	Setup.exe	81
PID 97948 wrote to memory of 98032	97948	AppLaunch.exe	88
PID 97948 wrote to memory of 98032	97948	AppLaunch.exe	88
PID 97948 wrote to memory of 98032	97948	AppLaunch.exe	88
PID 98032 wrote to memory of 2220	98032	qsasgjmwhsonrfzd.exe	90
PID 98032 wrote to memory of 2220	98032	qsasgjmwhsonrfzd.exe	90
PID 98032 wrote to memory of 2220	98032	qsasgjmwhsonrfzd.exe	90
PID 2220 wrote to memory of 98064	2220	cmd.exe	92
PID 2220 wrote to memory of 98064	2220	cmd.exe	92
PID 2220 wrote to memory of 98064	2220	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\Setup1.3\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup1.3\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:97948
- - C:\Users\Admin\AppData\Local\Temp\qsasgjmwhsonrfzd.exe
    "C:\Users\Admin\AppData\Local\Temp\qsasgjmwhsonrfzd.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:98032
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /tn \j9rn7w1385 /tr "C:\Users\Admin\AppData\Roaming\j9rn7w1385\svcupdater.exe" /st 00:00 /du 9999:59 /sc once /ri 1 /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2220
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn \j9rn7w1385 /tr "C:\Users\Admin\AppData\Roaming\j9rn7w1385\svcupdater.exe" /st 00:00 /du 9999:59 /sc once /ri 1 /f
        5⤵
        Creates scheduled task(s)
        
        PID:98064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 95136
  2⤵
  - Program crash
  PID:98072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3708 -ip 3708
1⤵
PID:98032

C:\Users\Admin\AppData\Roaming\j9rn7w1385\svcupdater.exe
C:\Users\Admin\AppData\Roaming\j9rn7w1385\svcupdater.exe
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4580

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\qsasgjmwhsonrfzd.exe

Filesize
132KB

MD5
76de5446bd4427858e8a3b12b3d15f77

SHA1
bcfb172c494e3d543d3797dd57222d2aa5984dc0

SHA256
8789899d36045ba32e9ca43e663d3ae1b0ce7fec8c4a5f63d604900d4796cd84

SHA512
0ec3c80fdcd76f6e011ae16bbbfbb37b0a16af3e360512035925df2d9333f353c396b05b79e45b677bb812eae3b629673c488a0c299c3f4d87c8bcb80ee4cf66

Download Submit
C:\Users\Admin\AppData\Local\Temp\qsasgjmwhsonrfzd.exe

Filesize
132KB

MD5
76de5446bd4427858e8a3b12b3d15f77

SHA1
bcfb172c494e3d543d3797dd57222d2aa5984dc0

SHA256
8789899d36045ba32e9ca43e663d3ae1b0ce7fec8c4a5f63d604900d4796cd84

SHA512
0ec3c80fdcd76f6e011ae16bbbfbb37b0a16af3e360512035925df2d9333f353c396b05b79e45b677bb812eae3b629673c488a0c299c3f4d87c8bcb80ee4cf66

Download Submit
C:\Users\Admin\AppData\Roaming\j9rn7w1385\svcupdater.exe

Filesize
132KB

MD5
76de5446bd4427858e8a3b12b3d15f77

SHA1
bcfb172c494e3d543d3797dd57222d2aa5984dc0

SHA256
8789899d36045ba32e9ca43e663d3ae1b0ce7fec8c4a5f63d604900d4796cd84

SHA512
0ec3c80fdcd76f6e011ae16bbbfbb37b0a16af3e360512035925df2d9333f353c396b05b79e45b677bb812eae3b629673c488a0c299c3f4d87c8bcb80ee4cf66

Download Submit
C:\Users\Admin\AppData\Roaming\j9rn7w1385\svcupdater.exe

Filesize
132KB

MD5
76de5446bd4427858e8a3b12b3d15f77

SHA1
bcfb172c494e3d543d3797dd57222d2aa5984dc0

SHA256
8789899d36045ba32e9ca43e663d3ae1b0ce7fec8c4a5f63d604900d4796cd84

SHA512
0ec3c80fdcd76f6e011ae16bbbfbb37b0a16af3e360512035925df2d9333f353c396b05b79e45b677bb812eae3b629673c488a0c299c3f4d87c8bcb80ee4cf66

Download Submit
memory/4580-152-0x0000000006650000-0x00000000066E2000-memory.dmp

Filesize
584KB

Download
memory/97948-149-0x0000000005340000-0x0000000005604000-memory.dmp

Filesize
2.8MB

Download
memory/97948-141-0x0000000005340000-0x0000000005604000-memory.dmp

Filesize
2.8MB

Download
memory/97948-140-0x0000000005340000-0x0000000005604000-memory.dmp

Filesize
2.8MB

Download
memory/97948-139-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/97948-133-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/98032-145-0x0000000000640000-0x0000000000668000-memory.dmp

Filesize
160KB

Download
memory/98032-146-0x00000000058B0000-0x0000000005E54000-memory.dmp

Filesize
5.6MB

Download