44caliber | a669abcbdbf3f91fcfdd6cb2d55c9ba68a020c11aaca6ddf0c5bbb5c234ed023

General

Target

EZTEAM0.0.7.exe
Size

7.8MB
MD5

79e6e964ad3a7e5b8008dc44553b784c
SHA1

63684848b7c4530aa24c96c6223fddd7e1417702
SHA256

a669abcbdbf3f91fcfdd6cb2d55c9ba68a020c11aaca6ddf0c5bbb5c234ed023
SHA512

7e7d9aa748766b12473b178ee95c728f266e86d14110deaf9eb1937ff5343a0b7aaf0c69388eb4a918a236e19b95a87035b20792e04627ce45c630bd02c45013
SSDEEP

196608:UuUTi2pHbUmUHtahgF8/LQS9fjvSG7LUIGmrl:gwmuahk8/LbxvSG7D1Z

Score

10^/10

44caliber xworm rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

phentermine-partial.gl.at.ply.gg:36969

Attributes

Install_directory
%AppData%
install_file
Client.exe
telegram
https://api.telegram.org/bot7080511499:AAGFFOA3S2vvwmEy85SIMhKHrMsAdBoLR2Y

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1233119648527159317/Az86qBZQwyED_alc1sGO6UWR18PzIJCJX0PM3XdL1VTOwZPXr0B4Rc6-GqAkKUjg4Jn2

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe	family_xworm
behavioral1/memory/3424-10-0x0000000000A30000-0x0000000000A48000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Drops startup file 2 IoCs

Processes:

EZTEAM.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.lnk	EZTEAM.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.lnk	EZTEAM.exe

Executes dropped EXE 4 IoCs

Processes:

EZTEAM.exeChrome.exeClient.exeClient.exe

pid process

3424 EZTEAM.exe
4724 Chrome.exe
1696 Client.exe
356 Client.exe
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
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 freegeoip.app
2 freegeoip.app
6 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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/Job
T1053

Processes:

schtasks.exe

pid process

1120 schtasks.exe

pid	process
3424	EZTEAM.exe
4724	Chrome.exe
1696	Client.exe
356	Client.exe

flow	ioc
1	freegeoip.app
2	freegeoip.app
6	ip-api.com

pid	process
1120	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

Chrome.exepowershell.exepowershell.exepowershell.exepowershell.exeEZTEAM.exe

pid	process
4724	Chrome.exe
4724	Chrome.exe
4724	Chrome.exe
324	powershell.exe
324	powershell.exe
324	powershell.exe
5112	powershell.exe
5112	powershell.exe
5112	powershell.exe
2312	powershell.exe
2312	powershell.exe
2312	powershell.exe
3060	powershell.exe
3060	powershell.exe
3060	powershell.exe
3424	EZTEAM.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

EZTEAM.exeChrome.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3424	EZTEAM.exe
Token: SeDebugPrivilege	4724	Chrome.exe
Token: SeDebugPrivilege	324	powershell.exe
Token: SeIncreaseQuotaPrivilege	324	powershell.exe
Token: SeSecurityPrivilege	324	powershell.exe
Token: SeTakeOwnershipPrivilege	324	powershell.exe
Token: SeLoadDriverPrivilege	324	powershell.exe
Token: SeSystemProfilePrivilege	324	powershell.exe
Token: SeSystemtimePrivilege	324	powershell.exe
Token: SeProfSingleProcessPrivilege	324	powershell.exe
Token: SeIncBasePriorityPrivilege	324	powershell.exe
Token: SeCreatePagefilePrivilege	324	powershell.exe
Token: SeBackupPrivilege	324	powershell.exe
Token: SeRestorePrivilege	324	powershell.exe
Token: SeShutdownPrivilege	324	powershell.exe
Token: SeDebugPrivilege	324	powershell.exe
Token: SeSystemEnvironmentPrivilege	324	powershell.exe
Token: SeRemoteShutdownPrivilege	324	powershell.exe
Token: SeUndockPrivilege	324	powershell.exe
Token: SeManageVolumePrivilege	324	powershell.exe
Token: 33	324	powershell.exe
Token: 34	324	powershell.exe
Token: 35	324	powershell.exe
Token: 36	324	powershell.exe
Token: SeDebugPrivilege	5112	powershell.exe
Token: SeIncreaseQuotaPrivilege	5112	powershell.exe
Token: SeSecurityPrivilege	5112	powershell.exe
Token: SeTakeOwnershipPrivilege	5112	powershell.exe
Token: SeLoadDriverPrivilege	5112	powershell.exe
Token: SeSystemProfilePrivilege	5112	powershell.exe
Token: SeSystemtimePrivilege	5112	powershell.exe
Token: SeProfSingleProcessPrivilege	5112	powershell.exe
Token: SeIncBasePriorityPrivilege	5112	powershell.exe
Token: SeCreatePagefilePrivilege	5112	powershell.exe
Token: SeBackupPrivilege	5112	powershell.exe
Token: SeRestorePrivilege	5112	powershell.exe
Token: SeShutdownPrivilege	5112	powershell.exe
Token: SeDebugPrivilege	5112	powershell.exe
Token: SeSystemEnvironmentPrivilege	5112	powershell.exe
Token: SeRemoteShutdownPrivilege	5112	powershell.exe
Token: SeUndockPrivilege	5112	powershell.exe
Token: SeManageVolumePrivilege	5112	powershell.exe
Token: 33	5112	powershell.exe
Token: 34	5112	powershell.exe
Token: 35	5112	powershell.exe
Token: 36	5112	powershell.exe
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeIncreaseQuotaPrivilege	2312	powershell.exe
Token: SeSecurityPrivilege	2312	powershell.exe
Token: SeTakeOwnershipPrivilege	2312	powershell.exe
Token: SeLoadDriverPrivilege	2312	powershell.exe
Token: SeSystemProfilePrivilege	2312	powershell.exe
Token: SeSystemtimePrivilege	2312	powershell.exe
Token: SeProfSingleProcessPrivilege	2312	powershell.exe
Token: SeIncBasePriorityPrivilege	2312	powershell.exe
Token: SeCreatePagefilePrivilege	2312	powershell.exe
Token: SeBackupPrivilege	2312	powershell.exe
Token: SeRestorePrivilege	2312	powershell.exe
Token: SeShutdownPrivilege	2312	powershell.exe
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeSystemEnvironmentPrivilege	2312	powershell.exe
Token: SeRemoteShutdownPrivilege	2312	powershell.exe
Token: SeUndockPrivilege	2312	powershell.exe
Token: SeManageVolumePrivilege	2312	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

EZTEAM.exe

pid process

3424 EZTEAM.exe

pid	process
3424	EZTEAM.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

EZTEAM0.0.7.exeEZTEAM.exe

description	pid	process	target process
PID 2836 wrote to memory of 3424	2836	EZTEAM0.0.7.exe	EZTEAM.exe
PID 2836 wrote to memory of 3424	2836	EZTEAM0.0.7.exe	EZTEAM.exe
PID 2836 wrote to memory of 4724	2836	EZTEAM0.0.7.exe	Chrome.exe
PID 2836 wrote to memory of 4724	2836	EZTEAM0.0.7.exe	Chrome.exe
PID 3424 wrote to memory of 324	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 324	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 5112	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 5112	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 2312	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 2312	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 3060	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 3060	3424	EZTEAM.exe	powershell.exe
PID 3424 wrote to memory of 1120	3424	EZTEAM.exe	schtasks.exe
PID 3424 wrote to memory of 1120	3424	EZTEAM.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\EZTEAM0.0.7.exe
"C:\Users\Admin\AppData\Local\Temp\EZTEAM0.0.7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2836
- C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe
  "C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3424
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:324
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'EZTEAM.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5112
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Client.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2312
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Client.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3060
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Client" /tr "C:\Users\Admin\AppData\Roaming\Client.exe"
    3⤵
    - Creates scheduled task(s)
    PID:1120
- C:\Users\Admin\AppData\Local\Temp\Chrome.exe
  "C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4724

C:\Users\Admin\AppData\Roaming\Client.exe
C:\Users\Admin\AppData\Roaming\Client.exe
1⤵
- Executes dropped EXE
PID:1696

C:\Users\Admin\AppData\Roaming\Client.exe
C:\Users\Admin\AppData\Roaming\Client.exe
1⤵
- Executes dropped EXE
PID:356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client.exe.log

Filesize
654B

MD5
16c5fce5f7230eea11598ec11ed42862

SHA1
75392d4824706090f5e8907eee1059349c927600

SHA256
87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151

SHA512
153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
3dbd5b2d84f5627aa3ea06b736804fce

SHA1
ac1d3895e4cc9acc352f83c33ab91d7dbc612530

SHA256
91037be31c72bed4032699b268ad253e4de74ccc2ead3cc9945658de041507c2

SHA512
60430f713d86467af3a3132cabb8484409ea04898b252358f714c52f0aae3c810bc1e90be803aa6f2d5df3449920181f542c7cad23a9986855614ca22d1c501a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
9f0dfaa94b29955a62edce86ac66671e

SHA1
b035fa161d0aafd65ebf80cc4924b2f4f66302a1

SHA256
4c0392b95297b82da1bba433c2ff3dc7fc84af97a3337aa6a38c78d7b138408b

SHA512
2ca898b1bcd4e5f554928d57718d47a0e1e2f3d5fe079c2e216f830f6554e64ab88723fcf78964c39bb2797e8b4565b3b5b79f7766d35fb298797b3db1e20682

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
fe391d0fe30981013e71c21e98157d03

SHA1
96407ed9dcc1f0aca7c3b67504feb21bfa6f9d9a

SHA256
f69a3a769bb548e6c188de34d99572a6d689a7bd5c4bb2cf2dc4d149d1d5c1cd

SHA512
fbebb4a5ca70b927c8b57f6fb988f6e897c28f207aa408b4914c1c5c6c5e12b4c0cc22e74ff57a81b307fe38f638e27c7e0e4df0ffe8afa68864f7e19a22961f

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

Filesize
303KB

MD5
0806acefdfc7d5602fb29b696edb0c64

SHA1
ff456af5fecb477cc00fffbaa4c206d18a62ee6a

SHA256
beecfc72917651d131028b60ab9a5dfb0b8e5e4ec60248321637048e06c524b7

SHA512
aa9bf80089dd565e2a4fa0af41f42c033c8093f83e52020b6c86c4cafeb49b627d712de89625adfbbc537d60f8fa0525b3c02164f4e34900c64ca3fd4fee134e

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

Filesize
74KB

MD5
ef36a6fed3a555b4aee8288dbe0143ee

SHA1
b31be44e9e4767d7df123d742f32802aa343d0ec

SHA256
4ab06ce2922222f591b776a0c6c332952ff24bbcf6f757692a6ed5f9b45cc67a

SHA512
04d87228b20401ab5c7d36be3a217c09a413c671a28c016fa82fe5b19cf7b5579f15bf74212bd6a5fd141bb4e29897dc754bda20896323f8f60fc55a3e47a09c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gn0isubm.4o1.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/324-38-0x0000028D41830000-0x0000028D41852000-memory.dmp

Filesize
136KB

Download
memory/324-41-0x0000028D41A20000-0x0000028D41A96000-memory.dmp

Filesize
472KB

Download
memory/2836-12-0x0000000000400000-0x0000000000BC9000-memory.dmp

Filesize
7.8MB

Download
memory/3424-33-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

Filesize
64KB

Download
memory/3424-13-0x00007FFB570B0000-0x00007FFB57A9C000-memory.dmp

Filesize
9.9MB

Download
memory/3424-10-0x0000000000A30000-0x0000000000A48000-memory.dmp

Filesize
96KB

Download
memory/3424-213-0x00007FFB570B0000-0x00007FFB57A9C000-memory.dmp

Filesize
9.9MB

Download
memory/3424-214-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

Filesize
64KB

Download
memory/4724-19-0x00007FFB570B0000-0x00007FFB57A9C000-memory.dmp

Filesize
9.9MB

Download
memory/4724-204-0x00007FFB570B0000-0x00007FFB57A9C000-memory.dmp

Filesize
9.9MB

Download
memory/4724-11-0x00000220EA330000-0x00000220EA382000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads