nymaim | 3d85914715c7ce508b6b048df845aeeb53a54e1856d394788d582743480f1cf8

General

Target

file.exe
Size

1.5MB
MD5

7b135fbde0e1325a2378e57f8ce90983
SHA1

e66a4d4d508856b27a5d587f03144ac2313702c0
SHA256

3d85914715c7ce508b6b048df845aeeb53a54e1856d394788d582743480f1cf8
SHA512

2d446de95b28a2d72dd168ab94e1716349fbfdcd3688d3ab2bf3366dda27ba0370427e134b1956066980d2e439aa6bbe3692fdec2d33c010076ba5b14f8e7864
SSDEEP

24576:g20hhVOVhKgqdpAqqNcucE8DzgtF5/S56bUbIMR1JXlTLGFpn5pI/GmfDYf+kATY:g2QVaKgJzSuKzgdewUvbJ1GD5++mnkAU

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

pid	Process
4704	file.tmp
2076	NitFiles451.exe
2900	sGliJ8S2Olgck.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	NitFiles451.exe

Loads dropped DLL 1 IoCs

pid	Process
4704	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

description	ioc	Process
File created	C:\Program Files (x86)\Nit Files\language\is-NSA5S.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-72ULP.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-09593.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-JDFEP.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-OLTOK.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-47I3P.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-039M0.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-1RNG6.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-DRPND.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-HNNJC.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-K4TB0.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-USS4S.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-NPNQ4.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-V28FI.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	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

pid	Process
1260	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2076	NitFiles451.exe
2076	NitFiles451.exe
2076	NitFiles451.exe
2076	NitFiles451.exe
2076	NitFiles451.exe
2076	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1260	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 4704	4532	file.exe	80
PID 4532 wrote to memory of 4704	4532	file.exe	80
PID 4532 wrote to memory of 4704	4532	file.exe	80
PID 4704 wrote to memory of 2076	4704	file.tmp	81
PID 4704 wrote to memory of 2076	4704	file.tmp	81
PID 4704 wrote to memory of 2076	4704	file.tmp	81
PID 2076 wrote to memory of 2900	2076	NitFiles451.exe	82
PID 2076 wrote to memory of 2900	2076	NitFiles451.exe	82
PID 2076 wrote to memory of 2900	2076	NitFiles451.exe	82
PID 2076 wrote to memory of 1080	2076	NitFiles451.exe	84
PID 2076 wrote to memory of 1080	2076	NitFiles451.exe	84
PID 2076 wrote to memory of 1080	2076	NitFiles451.exe	84
PID 1080 wrote to memory of 1260	1080	cmd.exe	86
PID 1080 wrote to memory of 1260	1080	cmd.exe	86
PID 1080 wrote to memory of 1260	1080	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\is-6DD8E.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-6DD8E.tmp\file.tmp" /SL5="$B0052,1289021,233984,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:4704
- - 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:2076
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\sGliJ8S2Olgck.exe
      4⤵
      Executes dropped EXE
      PID:2900
  - - 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:1080
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1260

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

Replay Monitor

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Downloads

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

Filesize
2.1MB

MD5
9e33faf4dc2f491ef7f4d1a8c2a7374d

SHA1
68df6b0c50fce0f43067ab8aa4d5557ef3638bf6

SHA256
c7fa7e93f5dd199c5cc23827a415819c41f7a130787e393267d490da3b79cc09

SHA512
0ba1f038a634ed71a7d233de4682d469932e76a42df2aef819cd44b5356b2605033882c893aaad480ddd6cb76e6285cec7c323d1c044e84c26de6130374b05ca

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

Filesize
2.1MB

MD5
9e33faf4dc2f491ef7f4d1a8c2a7374d

SHA1
68df6b0c50fce0f43067ab8aa4d5557ef3638bf6

SHA256
c7fa7e93f5dd199c5cc23827a415819c41f7a130787e393267d490da3b79cc09

SHA512
0ba1f038a634ed71a7d233de4682d469932e76a42df2aef819cd44b5356b2605033882c893aaad480ddd6cb76e6285cec7c323d1c044e84c26de6130374b05ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6DD8E.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6DD8E.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8P89A.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\sGliJ8S2Olgck.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\sGliJ8S2Olgck.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2076-143-0x0000000000400000-0x0000000001418000-memory.dmp

Filesize
16.1MB

Download
memory/2076-142-0x0000000000400000-0x0000000001418000-memory.dmp

Filesize
16.1MB

Download
memory/2076-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2076-152-0x0000000000400000-0x0000000001418000-memory.dmp

Filesize
16.1MB

Download
memory/2076-155-0x0000000000400000-0x0000000001418000-memory.dmp

Filesize
16.1MB

Download
memory/4532-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4532-151-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4532-134-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4532-156-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

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