agenttesla | d209b6fe66d2f2c856a3f56d6386a1963381a681c2cde6367840a24d717427e5

General

Target

rBrancheforeningers123.exe
Size

377KB
MD5

f63809d17e11d6e0d719d44a2ef45ca0
SHA1

58a52ad6005886660cf54c7abbc21b7b31371894
SHA256

d209b6fe66d2f2c856a3f56d6386a1963381a681c2cde6367840a24d717427e5
SHA512

c18204e5fb2e13665e76f42c105cbaeffbfe10d54e59ec90a3c416d76f192d54b80a05d35d973f3afa15f4c43f1b7d82587f0134d992630548caf70d5328cc1b
SSDEEP

6144:sspNjlsvCnvxZGVGGMrYfXcHQJsOjGXve0i489/8zvZKcrAc2uxMK7S+2vhv+k12:scBwJsON+zHrAzfK4hGko9HJSU

Score

10^/10

agenttesla guloader downloader keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.copychamo.com
Port:
587
Username:
[email protected]
Password:
Iu!&}hG}8u#3
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	rBrancheforeningers123.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 1 IoCs

pid	Process
3188	rBrancheforeningers123.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
55	api.ipify.org
56	api.ipify.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2752	caspol.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3188	rBrancheforeningers123.exe
2752	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3188 set thread context of 2752	3188	rBrancheforeningers123.exe	95

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Komponenternes\Trigesimal\Nonbibulously.Rsr	rBrancheforeningers123.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4196	2752	WerFault.exe	95

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3188	rBrancheforeningers123.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2752	caspol.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 2752	3188	rBrancheforeningers123.exe	95
PID 3188 wrote to memory of 2752	3188	rBrancheforeningers123.exe	95
PID 3188 wrote to memory of 2752	3188	rBrancheforeningers123.exe	95
PID 3188 wrote to memory of 2752	3188	rBrancheforeningers123.exe	95

C:\Users\Admin\AppData\Local\Temp\rBrancheforeningers123.exe
"C:\Users\Admin\AppData\Local\Temp\rBrancheforeningers123.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\rBrancheforeningers123.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of AdjustPrivilegeToken
  PID:2752
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 2696
    3⤵
    - Program crash
    PID:4196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2752 -ip 2752
1⤵
PID:1336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsc8E5B.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/2752-158-0x0000000000B00000-0x0000000002D9D000-memory.dmp

Filesize
34.6MB

Download
memory/2752-143-0x0000000000B00000-0x0000000002D9D000-memory.dmp

Filesize
34.6MB

Download
memory/2752-144-0x0000000000B00000-0x0000000002D9D000-memory.dmp

Filesize
34.6MB

Download
memory/2752-157-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/2752-159-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2752-160-0x00000000360E0000-0x0000000036684000-memory.dmp

Filesize
5.6MB

Download
memory/2752-161-0x0000000035BC0000-0x0000000035C26000-memory.dmp

Filesize
408KB

Download
memory/2752-162-0x0000000035BB0000-0x0000000035BC0000-memory.dmp

Filesize
64KB

Download
memory/2752-163-0x0000000036C30000-0x0000000036CC2000-memory.dmp

Filesize
584KB

Download
memory/2752-164-0x0000000036BC0000-0x0000000036BCA000-memory.dmp

Filesize
40KB

Download
memory/2752-166-0x0000000000B00000-0x0000000002D9D000-memory.dmp

Filesize
34.6MB

Download
memory/3188-142-0x0000000002A20000-0x0000000004CBD000-memory.dmp

Filesize
34.6MB

Download
memory/3188-141-0x0000000002A20000-0x0000000004CBD000-memory.dmp

Filesize
34.6MB

Download

Analysis

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