nymaim | df446d870b600a0e98275fa82ab1b6ee9f372ec2551c3165371713c4b9188d29

General

Target

file.exe
Size

1.5MB
MD5

e284a97ab4d6849ac4ae5b79a2b8a73a
SHA1

2965b059fe4ae39fc4a522bb79a18d9179a2dee5
SHA256

df446d870b600a0e98275fa82ab1b6ee9f372ec2551c3165371713c4b9188d29
SHA512

fdb673b81f9901987729b0332ef99a14c96a1e44f1a9d9ef103724d19941042b2a38705c97113aa2f09faf5224a0516f32e4b4005b1d839566e8084117f60fae
SSDEEP

24576:g20hhVe4eL8sw2Citqeb/9FOjF0mx8el5N8oMm6HBYf+kATuCqtn/:g2QVbzsw2CitD1FOjFmerqvBHdkATuCi

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

Processes:

file.tmpNitFiles451.exe5gpgH06g.exe

pid	Process
1584	file.tmp
5116	NitFiles451.exe
1332	5gpgH06g.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

NitFiles451.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	NitFiles451.exe

Loads dropped DLL 1 IoCs

Processes:

file.tmp

pid	Process
1584	file.tmp

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

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	Process
File created	C:\Program Files (x86)\Nit Files\language\is-6TCSG.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-0FOEU.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-UFP43.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-LTBS5.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-5UFTO.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-9A7T7.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-I4L4R.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-PP9U3.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-TK28T.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-OPR65.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-JQURN.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-3G9CL.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-EEVIB.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-0K8P8.tmp	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

Processes:

taskkill.exe

pid	Process
3232	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

NitFiles451.exe

pid	Process
5116	NitFiles451.exe
5116	NitFiles451.exe
5116	NitFiles451.exe
5116	NitFiles451.exe
5116	NitFiles451.exe
5116	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description	pid	Process
Token: SeDebugPrivilege	3232	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	Process	procid_target
PID 3540 wrote to memory of 1584	3540	file.exe	82
PID 3540 wrote to memory of 1584	3540	file.exe	82
PID 3540 wrote to memory of 1584	3540	file.exe	82
PID 1584 wrote to memory of 5116	1584	file.tmp	83
PID 1584 wrote to memory of 5116	1584	file.tmp	83
PID 1584 wrote to memory of 5116	1584	file.tmp	83
PID 5116 wrote to memory of 1332	5116	NitFiles451.exe	84
PID 5116 wrote to memory of 1332	5116	NitFiles451.exe	84
PID 5116 wrote to memory of 1332	5116	NitFiles451.exe	84
PID 5116 wrote to memory of 4808	5116	NitFiles451.exe	90
PID 5116 wrote to memory of 4808	5116	NitFiles451.exe	90
PID 5116 wrote to memory of 4808	5116	NitFiles451.exe	90
PID 4808 wrote to memory of 3232	4808	cmd.exe	92
PID 4808 wrote to memory of 3232	4808	cmd.exe	92
PID 4808 wrote to memory of 3232	4808	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Users\Admin\AppData\Local\Temp\is-MIK75.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MIK75.tmp\file.tmp" /SL5="$D01EE,1285935,233984,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1584
- - C:\Program Files (x86)\Nit Files\NitFiles451.exe
    "C:\Program Files (x86)\Nit Files\NitFiles451.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:5116
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\5gpgH06g.exe
      4⤵
      Executes dropped EXE
      PID:1332
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4808
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3232

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
2.1MB

MD5
28933edc022b544e92f817894a18e9d4

SHA1
66e700e1d232295c1663452f916bce42e3013f07

SHA256
1bae9dcea986f62736b1da000dac2225374bcd48cd2b96799304ecf651602871

SHA512
85133fcef90c77a101ea13629245863b4eed2da573866ebab8045e4d462db1b6188cb2452c109501a0e52a69f8f24bdcb9c727f9ba42567691b3de44a891720e

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
2.1MB

MD5
28933edc022b544e92f817894a18e9d4

SHA1
66e700e1d232295c1663452f916bce42e3013f07

SHA256
1bae9dcea986f62736b1da000dac2225374bcd48cd2b96799304ecf651602871

SHA512
85133fcef90c77a101ea13629245863b4eed2da573866ebab8045e4d462db1b6188cb2452c109501a0e52a69f8f24bdcb9c727f9ba42567691b3de44a891720e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-DCOSU.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MIK75.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MIK75.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\5gpgH06g.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\5gpgH06g.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1332-144-0x0000000000000000-mapping.dmp

Download
memory/1584-134-0x0000000000000000-mapping.dmp

Download
memory/3232-153-0x0000000000000000-mapping.dmp

Download
memory/3540-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/3540-155-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/3540-138-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4808-152-0x0000000000000000-mapping.dmp

Download
memory/5116-143-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/5116-151-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/5116-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/5116-142-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/5116-154-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/5116-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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