nymaim | e54e5e33dd0492a5d20081d4fa11d1b1c544c1cd7760172fc86953d6ea3f2fad

General

Target

file.exe
Size

1.5MB
MD5

1c3eaf8fdd03109dc4bb2e969db3d6f8
SHA1

e32749f81ec6c9519098569c7164f7a8c0a3fbce
SHA256

e54e5e33dd0492a5d20081d4fa11d1b1c544c1cd7760172fc86953d6ea3f2fad
SHA512

a4985f7edb0cf1c09017ade58a0eae8e048be306359d02fa4daafa143f2f203002ef843c91dd1ca3a8e8600020b18c3e7971938099286fbbf2edae5ee55c19c8
SSDEEP

24576:g20hhVdOnZy+8ylUouHfgzUC3Bz+MnpEP0qcSevAM8vfN0NvBtnySBd4Yf+kATuD:g2QVovUo6LGzzpccrvQ9mBrckATuCE/

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.exe4xdzm42e.exe

pid process

3544 file.tmp
1292 NitFiles451.exe
2184 4xdzm42e.exe

pid	process
3544	file.tmp
1292	NitFiles451.exe
2184	4xdzm42e.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

3544 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

pid	process
3544	file.tmp

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Nit Files\language\is-0UH2P.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-EP08A.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-NBB4N.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-LOFH0.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-DKVB1.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-1E0JS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-TDVKA.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-C4PMR.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-S2OSM.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-8NGUC.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-10TVK.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\is-FA4LF.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-A9BM9.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\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-PHANA.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

2312 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

NitFiles451.exe

pid process

1292 NitFiles451.exe
1292 NitFiles451.exe
1292 NitFiles451.exe
1292 NitFiles451.exe
1292 NitFiles451.exe
1292 NitFiles451.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2312 taskkill.exe

pid	process
2312	taskkill.exe

pid	process
1292	NitFiles451.exe
1292	NitFiles451.exe
1292	NitFiles451.exe
1292	NitFiles451.exe
1292	NitFiles451.exe
1292	NitFiles451.exe

description	pid	process
Token: SeDebugPrivilege	2312	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	process	target process
PID 2952 wrote to memory of 3544	2952	file.exe	file.tmp
PID 2952 wrote to memory of 3544	2952	file.exe	file.tmp
PID 2952 wrote to memory of 3544	2952	file.exe	file.tmp
PID 3544 wrote to memory of 1292	3544	file.tmp	NitFiles451.exe
PID 3544 wrote to memory of 1292	3544	file.tmp	NitFiles451.exe
PID 3544 wrote to memory of 1292	3544	file.tmp	NitFiles451.exe
PID 1292 wrote to memory of 2184	1292	NitFiles451.exe	4xdzm42e.exe
PID 1292 wrote to memory of 2184	1292	NitFiles451.exe	4xdzm42e.exe
PID 1292 wrote to memory of 2184	1292	NitFiles451.exe	4xdzm42e.exe
PID 1292 wrote to memory of 3148	1292	NitFiles451.exe	cmd.exe
PID 1292 wrote to memory of 3148	1292	NitFiles451.exe	cmd.exe
PID 1292 wrote to memory of 3148	1292	NitFiles451.exe	cmd.exe
PID 3148 wrote to memory of 2312	3148	cmd.exe	taskkill.exe
PID 3148 wrote to memory of 2312	3148	cmd.exe	taskkill.exe
PID 3148 wrote to memory of 2312	3148	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2952

C:\Users\Admin\AppData\Local\Temp\is-E3HV2.tmp\file.tmp
"C:\Users\Admin\AppData\Local\Temp\is-E3HV2.tmp\file.tmp" /SL5="$40056,1259684,233984,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:3544

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:1292

C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\4xdzm42e.exe
4⤵
- Executes dropped EXE
PID:2184

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:3148

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "NitFiles451.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2312

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
78b09300b370e10de5a7f602a9c38b35

SHA1
a6e44f0b795fc151f22bf25d5cdbf452537291db

SHA256
b5c3a335e228d6b39d19480af3c77cf15cc008d3bb3df27f8e85ba49ad4801a7

SHA512
5d41795644cba08a377cc2ede5cab0e7bbc92f9f51853f15c64ba6590d6b59fff68dda96cac25fb79b0ebe9958e9983b9383e173d26a81f19dece6e14a065bf4

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
78b09300b370e10de5a7f602a9c38b35

SHA1
a6e44f0b795fc151f22bf25d5cdbf452537291db

SHA256
b5c3a335e228d6b39d19480af3c77cf15cc008d3bb3df27f8e85ba49ad4801a7

SHA512
5d41795644cba08a377cc2ede5cab0e7bbc92f9f51853f15c64ba6590d6b59fff68dda96cac25fb79b0ebe9958e9983b9383e173d26a81f19dece6e14a065bf4

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-E3HV2.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-E3HV2.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-K3UOL.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\4xdzm42e.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\4xdzm42e.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1292-151-0x0000000000400000-0x000000000140D000-memory.dmp

Filesize
16.1MB

Download
memory/1292-139-0x0000000000000000-mapping.dmp

Download
memory/1292-142-0x0000000000400000-0x000000000140D000-memory.dmp

Filesize
16.1MB

Download
memory/1292-143-0x0000000000400000-0x000000000140D000-memory.dmp

Filesize
16.1MB

Download
memory/1292-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1292-154-0x0000000000400000-0x000000000140D000-memory.dmp

Filesize
16.1MB

Download
memory/2184-144-0x0000000000000000-mapping.dmp

Download
memory/2312-153-0x0000000000000000-mapping.dmp

Download
memory/2952-138-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2952-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2952-155-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/3148-152-0x0000000000000000-mapping.dmp

Download
memory/3544-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads